apl. Prof. Dr. Michael Bröcker

Professur für Geochemie (Prof. Stracke)
apl. Prof. Dr. Michael Bröcker

Corrensstr. 24, room 204
48149 Münster

T: +49 251 83-33403
F: +49 251 83-38397

  • Research Areas

    Metamorphic petrology (with emphasis on high-pressure metamorphism) and geochronology (Rb-Sr, Sm-Nd, U-Pb, 40Ar-39Ar).

    The aim of my research is to unravel the magmatic and tectonometamorphic evolution of distinct crustal segments and to date precisely specific stages of complex P-T-t-deformation paths. The geological significance of geochronological results is explored by a combination of a multimethod approach (various combinations of Rb-Sr, 40Ar-39Ar, Sm-Nd and U-Pb techniques) with detailed characterization of the phases used for dating (e.g. electron microprobe studies on mineral separates, application of LA-ICPMS, REM, CL imaging). Bulk-compositional data (major, minor, trace elements including REE) are used to constrain the importance of metasomatic alteration during metamorphism/deformation and to study the significance of such compositional modifications for interpretation of isotopic results.

    Current research mainly focuses on projects related to the Cycladic blueschist belt (Greece), the Sistan suture zone (Iran), the Sanandaj-Sirjan Zone (Iran), New Caledonia and Tadschikistan. Previous activities include studies in the Sudetes (Poland, Czech Republic), Norway, Tienshan (China), South India, Oman, Italy (Calabria), Antarctica (Wilson terrane) and California (Franciscan Complex).

  • Teaching

    • Geochemische Arbeitsmethoden (BSc)
    • Vulkanismus (BSc)
    • Metamorphe Petrologie (MSc)
    • Geochronologische Arbeitsmethoden (MSc)
    • Exkursionen (BSc): Harz, Thüringer Wald, Lahn-Dill-Gebiet, Siebengebirge
    • Exkursionen (MSc): Kykladen, Italien, Zypern, Naxos-Santorini
 

  • CV

    Education

    apl. Professor
    habilitation, mineralogy, Universität Münster
    PhD, mineralogy, Universität Würzburg
    Diplom, geology, Universität Tübingen

    Positions

    apl. Professor
    lecturer, mineralogy, Universität Münster
    Post-doc, mineralogy, Universität Würzburg
    Post-doc, University of California Davis, USA
    Post-doc, mineralogy, Universität Würzburg

  • Projects

    • Das Alter von hochdruckfaziellen Gesteinen der Insel Andros, Griechenland: kretazische und/oder eozäne Blauschiefer-Metamorphose ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/26-1
    • Geochronology of high-pressure and amphibolite-facies rocks from the Bantimala Complex, SW Sulawesi, Indonesia ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/23-2
    • Die Altersstellung von metamorphen Gesteinen aus der Makran- und Sabzevar-Region (Iran): neue Eckpunkte für die zeitliche Entwicklung der Arabisch-Eurasischen Kollisionszone ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/25-1
    • Geochronologie von hochdruck- und amphibolitfaziellen Gesteinen des Bantimala-Komplexes; SW Sulawesi, Indonesien ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/23-1
    • The Sistan Suture Zone, eastern Iran: the exhumation history of oceanic HP/LT rocks and the geological significance of presumed granulite-facies mélange rocks ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/22-1
    • Timing and rates of fluid release during the dehydration of subconducting oceanic crust: reactive fluid flow und high-pressure conditions ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: 587295
    • Geochronology of HP/LT rocks and amphibolites from the Hajiabad-Esfandagheh area, Sanandaj-Sirjan Zone, Iran ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/19-1
    • Sedimentation ages of clastic metasediments from the Cycladic blueschist unit, Greece ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/17-1
    • Protolith ages and the time of metamorphism of mélange blocks from the Sistan Suture Zone, Iran ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/16-1
    • The jadeitites in the mélange occurrences of the Cyclades: petrogenesis and geological significance of an unusual rock type ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/13-1
    • Petrology, geochemistry and geochronology of the eclogite-orthogneiss rock suite from Garborg, Norway ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/14-1
    • Petrology, geochemistry and geochronology of the eclogite-orthogneiss rock suite from Garborg, Norway ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: 565193
    • Rb-Sr geochronological studies in the Cyclades: unravelling of accurate ages from mixed white mica populations and the protolith ages of marbles ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/12-1
    • The Orlica-Snieznik dome: geological significance of pre-340 Ma metamorphism and the protolith age of HP granulites ( – )
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: BR 1068/11-1

  • Publications

    • Bröcker, M.; Schenk, V.; Scherer, E.E.; Soesilo, J., & Berndt, J. (). Refining the understanding of Cretaceous subduction zone processes in the central Indonesian region: the Bantimala Complex (SW Sulawesi) revisited. Journal of Asian Earth Sciences, 255. doi: 10.1016/j.jseaes.2023.105761.
    • Bröcker, M. (). The jadeitites from Syros and Tinos, Cycladic Blueschist Unit, Greece: field observations, mineralogical, geochemical and geochronological characteristics. Geological Magazine, 160, 1586–1606. doi: 10.1017/S0016756823000602.

    • Höhn M, Bröcker M, & Berndt J. (). The Jurassic meta-ophiolitic rocks of Cape Steno, Andros, Greece: a high-pressure/low-temperature mélange with Pelagonian affinity in the Cycladic Blueschist Unit? International Journal of Earth Sciences, 111, 949–968. doi: 10.1007/s00531-022-02161-w.
    • Bröcker M, Scherer EE, Xypolias P, & Höhn M. (). The timing of blueschist-facies metamorphism in the Makrotantalon Unit on Andros Island, Greece: Cretaceous and Eocene high-pressure/low-temperature events? Geological Magazine, 159, 1437–1453. doi: 10.1017/S0016756822000280.
    • Bröcker M, Hövelkröger Y, Fotoohi Rad GR, Berndt J, Scherer EE, Kurzawa T, & Moslempour ME. (). The magmatic and tectono-metamorphic history of the Sistan suture zone, Iran: New insights into a key region for the convergence between the Lut and Afghan blocks. Journal of Asian Earth Sciences, 2022. doi: 10.1016/j.jseaes.2022.105313.

    • Bröcker M, Omrani H, Berndt J, & Moslempour ME. (). Unravelling metamorphic ages of suture zone rocks from the Sabzevar and Makran areas (Iran): robust age constraints for the larger Arabia-Eurasian collision zone. Journal of Metamorphic Geology, 39, 1099–1129. doi: 10.1111/jmg.12603.
    • Taetz S, Scherer EE, Bröcker M, Spandler C, & John T. (). Petrological and Lu-Hf age constraints for eclogitic rocks from the Pam Peninsula, New Caledonia. Lithos, 388-389. doi: 10.1016/j.lithos.2021.106073.
    • Alfing J, Bröcker M, & Setiawan NI. (). Rb–Sr geochronology of metamorphic rocks from the Central Indonesian Accretionary Collision Complex: Additional age constraints for the Meratus and Luk Ulo complexes (South Kalimantan and Central Java). Lithos, 388-389. doi: 10.1016/j.lithos.2021.105971.
    • Mavrogonatos C, Magganas A, Kati M., Bröcker M, & Voudouris, P. (). Ophicalcites from the Upper Tectonic Unit on Tinos, Cyclades, Greece: mineralogical, geochemical and isotope evidence for their origin and evolution. International Journal of Earth Sciences, 110, 809–832. doi: 10.1007/s00531-021-01991-4.

    • Moazzen M, Salimi Z, Rolland Y, Bröcker M, & Hajialioghli R. (). Protolith nature and P-T evolution of Variscan metamorphic rocks from the Allahyarlu complex, NW Iran. Geological Magazine, 157, 1853–1876. doi: 10.1017/S0016756820000102.
    • Maulana A, Bröcker M, & Dan W. (). Petrogenesis and geochronology of Cenozoic intrusions in the Poboya and Sassak gold and copper districts in Western Sulawesi, Indonesia: Implications for the mineralization processes and magma sources. Journal of Asian Earth Sciences, 172, 170–189. doi: 10.1016/j.jseaes.2018.09.006.

    • Wolff R, Hetzel R, Dunkl I, Bröcker M, Xu Q, Anczkiewicz A.A. (). High-angle normal faulting at the Tangra Yumco graben (southern Tibet) since ~15 Ma. The Journal of Geology, 127, 15–36. doi: 10.1086/700406.
    • Babazadeh S, Ghorbani MR, Cottle JM, & Bröcker M. (). Multi-stage tectono-magmatic evolution of the central Urumieh-Dokhtar magmatic arc, south Ardestan, Iran: Insights from zircon geochronology and geochemistry. Geological Journal, 54, 2447–2471. doi: 10.1002/gj.3306.
    • Schulz-Isenbeck J, Bröcker M, & Berndt J. (). U–Pb zircon dating of Paleozoic volcanic rocks from the Rheno-Hercynian Zone: new age constraints for the Steinkopf formation, Lahn-Dill area, Germany. International Journal of Earth Sciences, 108(6), 1835–1855. doi: 10.1007/s00531-019-01736-4.
    • Böhnke M, Bröcker M, Maulana A, Klemd R, Berndt J, & Baier H. (). Geochronology and Zr-in-rutile thermometry of high-pressure/low-temperature metamorphic rocks from the Bantimala Complex, SW Sulawesi, Indonesia. Lithos, 324-325, 340–355. doi: 10.1016/j.lithos.2018.11.020.
    • Hoffmann J, Bröcker M, Setiawan NI, Klemd R, Berndt J, Maulana A, & Baier H. (). Age constraints on high-pressure/low-temperature metamorphism and sedimentation in the Luk Ulo Complex (Java, Indonesia). Lithos, 324-325, 747–762. doi: 10.1016/j.lithos.2018.11.019.
    • Maulana A, Christy AG, Ellis DJ, & Bröcker M. (). The distinctive tectonic and metamorphic history of the Barru Block, South Sulawesi, Indonesia: Petrological, geochemical and geochronological evidence. Journal of Asian Earth Sciences, 172, 170–189. doi: 10.1016/j.jseaes.2018.09.006.

    • Taetz S, John T, Bröcker M, Spandler C, & Stracke A. (). Fast intraslab fluid-flow events linked to pulses of high pore fluid pressure at the subducted plate interface. Earth Planet. Sci. Lett., 482, 33–43. doi: 10.1016/j.epsl.2017.10.044.

    • Kurzawa T, Bröcker M, Fotoohi Rad G, Berndt J, & Lisker F. (). Cretaceous high-pressure metamorphism and low pressure overprint in the Sistan Suture Zone, eastern Iran: additional temperature estimates for eclogites, geological significance of U-Pb zircon ages and Rb-Sr constraints on the timing of exhumation. Journal of Asian Earth Sciences, 147, 332–344. doi: 10.1016/j.jseaes.2017.07.051.
    • Hinsken T, Bröcker M, Strauss H, & Bulle F. (). Geochemical, isotopic and geochronological characterization of listvenite from the Upper Unit on Tinos, Cyclades, Greece. Lithos, 282-283, 281-297. doi: 10.1016/j.lithos.2017.02.019.
    • Babazadeh S, Ghorbani MR, Bröcker M, D'Antonio M, Cottle J, Gebbing T, Mazzeo FC, & Ahmadi P. (). Late Oligocene-Miocene mantle upwelling and interaction inferred from mantle signatures in gabbroic to granitic rocks from the Urumieh-Dokhtar arc, south Ardestan, Iran. International Geology Review, 59(12), 1590–1608. doi: 10.1080/00206814.2017.1286613.
    • Shafaii Moghadam H, Bröcker M, Griffin WL, H– Li X, Chen RX, O’Reilly SY. (). Subduction, high–P metamorphism and collision fingerprints in South Iran: Constraints from zircon U–Pb and mica Rb–Sr geochronology. Geochemistry, Geophysics, Geosystems, 18, 306–332. doi: 10.1002/2016GC006585.

    • Taetz S, John T, Bröcker M, & Spandler C. (). Fluid–rock interaction and evolution of a high-pressure/low-temperature vein system in eclogite from New Caledonia: insights into intraslab fluid flow processes. Contributions to Mineralogy and Petrology, 171(11), 1–27. doi: 10.1007/s00410-016-1295-z.
    • Hinsken T, Bröcker M, Berndt J, & Gärtner C. (). Maximum sedimentation ages and provenance of metasedimentary rocks from Tinos Island, Cycladic blueschist belt, Greece. . International Journal of Earth Sciences, 105, 1923–1940. doi: 10.1007/s00531-015-1258-z.
    • Bröcker M, Huyskens M, & Berndt J. (). U–Pb dating of detrital zircons from Andros, Greece: constraints for the time of sediment accumulation in the northern part of the Cycladic blueschist belt. Geological Journal, 51, 354–367. doi: 10.1002/gj.2634.

    • Fu B., Bröcker M., Ireland T., Holden P., Kinsley L.P.J. (). Zircon U-Pb, O, and Hf isotopic constraints on Mesozoic magmatism in the Cyclades, Aegean Sea, Greece. International Journal of Earth Sciences, 104, 75–87. doi: 10.1007/s00531-014-1064-z.
    • Löwen K., Bröcker M., & Berndt J. (). Depositional ages of clastic metasediments from Samos and Syros, Greece: results of a detrital zircon study. International Journal of Earth Sciences, 104, 205–220. doi: 10.1007/s00531-014-1058-x.

    • Huyskens M, & Bröcker M. (). The status of the Makrotantalon Unit (Andros, Greece) within the structural framework of the Attic-Cycladic Crystalline Belt. Geological Magazine, 151, 430–446. doi: 10.1017/S0016756813000307.
    • Bröcker M., Löwen K., & Rodionov N. (). Unraveling protolith ages of meta-gabbros from Samos and the Attic-Cycladic Crystalline Belt, Greece: Results of a U-Pb zircon and Sr-Nd whole rock study. Lithos, 198-199, 234–248. doi: 10.1016/j.lithos.2014.03.029.
    • Bröcker M., Fotoohi Rad G., Abbaslu F., & Rodionov N. (). Geochronology of high-grade metamorphic rocks from the Anjul area, Lut block, eastern Iran. Journal of Asian Earth Sciences, 82, 151–162. doi: 10.1016/j.jseaes.2013.12.021.
    • Eickmann B., Thorseth I.H., Peters M., Strauss H., Bröcker M., Pedersen R.B. (). Barite in hydrothermal environments as a recorder of subseafloor processes: A multiple-isotope study from the Loki's Castle vent field. Geobiology, 12(4), 308–321. doi: 10.1111/gbi.12086.

    • Bröcker M, Baldwin S, & Arkudas R. (). The geological significance of 40Ar/39Ar and Rb-Sr white mica ages from Syros and Sifnos, Greece: A record of continuous (re)crystallization during exhumation? Journal of Metamorphic Geology, 31, 629–646. doi: 10.1111/jmg.12037.
    • Bröcker M, Fotoohi Rad G, Burgess R, Theunissen S, Paderin I, Rodionov N, & Salimi Z. (). New age constraints for the geodynamic evolution of the Sistan Suture Zone, eastern Iran. Lithos, 170-171, 17–34. doi: 10.1016/j.lithos.2013.02.012.

    • Fu B, Paul B, Cliff J, Brocker M, & Bulle F. (). O-Hf isotope constraints on the origin of zircon in high-pressure melange blocks and associated matrix rocks from Tinos and Syros, Greece. European Journal of Mineralogy, 24(2), 277–287. doi: 10.1127/0935-1221/2011/0023-2131.

    • Gärtner C, Bröcker M, Strauss H, & Farber K. (). Strontium-, carbon- and oxygen-isotope compositions of marbles from the Cycladic blueschist belt, Greece. Geological Magazine, 148, 511–528. doi: 10.1017/S001675681100001X.
    • Smit MA, Bröcker M, Kooijman E, & Scherer EE. (). Provenance and exhumation of an exotic eclogite-bearing nappe in the Caledonides: a U-Pb and Rb-Sr study of the Jaeren nappe, SW Norway. Journal of the Geological Society, 168(2), 423–439. doi: 10.1144/0016-76492010-096.

    • Bulle F, Bröcker M, Gärtner C, & Keasling A. (). Geochemistry and geochronology of HP mélanges from Tinos and Andros, cycladic blueschist belt, Greece. Lithos, 117(1-4), 61–81. doi: 10.1016/j.lithos.2010.02.004.
    • Fu B, Valley JW, Kita NT, Spicuzza MJ, Paton C, Tsujimori T, Bröcker M, & Harlow GE. (). Multiple origins of zircons in jadeitite. Contributions to Mineralogy and Petrology, 159(6), 769–780. doi: 10.1007/s00410-009-0453-y.
    • Smit MA, Scherer EE, Bröcker M, van, & Roermund HLM. (). Timing of eclogite facies metamorphism in the southernmost Scandinavian Caledonides by Lu-Hf and Sm-Nd geochronology. Contributions to Mineralogy and Petrology, 159(4), 521–539. doi: 10.1007/s00410-009-0440-3.

    • Bröcker M, Klemd R, Cosca M, Brock W, Larionov AN, & Rodionov N. (). The timing of eclogite facies metamorphism and migmatization in the Orlica-Snieznik complex, Bohemian Massif: constraints from a multimethod geochronological study. Journal of Metamorphic Geology, 27(5), 385–403. doi: 10.1111/j.1525-1314.2009.00823.x.

    • Smit MA, Bröcker M, & Scherer EE. (). Aragonite and magnesite in eclogites from the Jaeren nappe, SW Norway: disequilibrium in the system CaCO3-MgCO3 and petrological implications. Journal of Metamorphic Geology, 26(9), 959–979. doi: 10.1111/j.1525-1314.2008.00795.x.

    • Bröcker M, & Pidgeon RT. (). Protolith ages of meta-igneous and metatuffaceous rocks from the Cycladic blueschist unit, Greece: Results of a reconnaissance U-Pb zircon study. Journal of Geology, 115(1), 83–98. doi: 10.1086/509269.

    • Bröcker M, & Keasling A. (). Ionprobe U-Pb zircon ages from the high-pressure/low-temperature mélange of Syros, Greece: Age diversity and the importance of pre-Eocene subduction. Journal of Metamorphic Geology, 24(7), 615–631. doi: 10.1111/j.1525-1314.2006.00658.x.
    • Bröcker M, & Franz L. (). Dating metamorphism and tectonic juxtaposition on Andros Island (Cyclades, Greece): results of a Rb-Sr study. Geological Magazine, 143(5), 609–620. doi: 10.1017/S001675680600241X.

    • Klemd R, Bröcker M, Hacker BR, Gao J, Gans P, & Wemmer K. (). New age constraints on the metamorphic evolution of the high-pressure/low-temperature belt in the western Tianshan mountains, NW China. Journal of Geology, 113(2), 157–168. doi: 10.1086/427666.
    • Lange U, Bröcker M, Armstrong R, Zelazniewicz A, Trapp E, & Mezger K. (). The orthogneisses of the Orlica-Snieznik complex (West Sudetes, Poland): geochemical characteristics, the importance of pre-Variscan migmatization and constraints on the cooling history. Journal of the Geological Society, 162, 973–984. doi: 10.1144/0016-764904-095.
    • Bröcker M, & Franz L. (). The base of the Cycladic blueschist unit on Tinos Island (Greece) re-visited: Field relationships, phengite chemistry and Rb-Sr geochronology. Neues Jahrbuch für Mineralogie - Abhandlungen, 181(1), 81–93. doi: 10.1127/0077-7757/2005/0181-0003.

    • Breeding CM, Ague JJ, & Bröcker M. (). Fluid-metasedimentary rock interactions in subduction-zone mé lange: Implications for the chemical composition of arc magmas. Geology, 32(12), 1041–1044. doi: 10.1130/G20877.1.
    • Bröcker M, Bieling D, Hacker B, & Gans P. (). High-Si phengite records the time of greenschist facies overprinting: Implications for models suggesting mega-detachments in the Aegean Sea. Journal of Metamorphic Geology, 22(5), 427–442. doi: 10.1111/j.1525-1314.2004.00524.x.
    • Mazur S, Turniak K, & Bröcker M. (). Neoproterozoic and Cambro-Ordovician magmatism in the Variscan Klodzko Metamorphic Complex (West Sudetes, Poland): new insights from U/Pb zircon dating. International Journal of Earth Sciences, 93(5), 758–772. doi: 10.1007/s00531-004-0417-4.
    • Cenki B, Braun I, & Bröcker M. (). Evolution of the continental crust in the Kerala Khondalite Belt, southernmost India: evidence from Nd isotope mapping, U-Pb and Rb-Sr geochronology. Precambrian Research, 134(3-4), 275–292. doi: 10.1016/j.precamres.2004.06.002.
    • Braun I, & Bröcker M. (). Monazite dating of granitic gneisses and leucogranites from the Kerala Khondalite Belt, southern India: implications for Late Proterozoic crustal evolution in East Gondwana. International Journal of Earth Sciences, 93(1), 13–22. doi: 10.1007/s00531-003-0376-1.

    • Ring U, Thomson SN, Bröcker M. (). Fast extension but little exhumation: The Vari detachment in the Cyclades, Greece. Geological Magazine, 140(3), 245–252. doi: 10.1017/S0016756803007799.

    • Lange U, Bröcker M, Mezger K, & Don J. (). Geochemistry and Rb-Sr geochronology of a ductile shear zone in the Orlica-Snieznik dome (West Sudetes, Poland). International Journal of Earth Sciences, 91(6), 1005–1016. doi: 10.1007/s00531-002-0281-z.
    • Lange U, Bröcker M, Mezger K, & Don J. (). Geochemistry and Rb-Sr geochronology of a ductile shear zone in the Orlica-Śnieznik dome (West Sudetes, Poland). International Journal of Earth Sciences, 91(6), 1005–1016. doi: 10.1007/s00531-002-0281-z.

    • El-Shazly AK, Bröcker M, Hacker B, & Calvert A. (). Formation and exhumation of blueschists and ecologies from NE oman: New perspectives from Rb-Sr and 40Ar/39Ar dating. Journal of Metamorphic Geology, 19(3), 233–248.
    • Bröcker M, & Enders M. (). Unusual bulk-rock compositions in eclogite-facies rocks from Syros and Tinos (Cyclades, Greece): implications for U-Pb zircon geochronology. Chemical Geology, 175(3-4), 581–603. doi: 10.1016/S0009-2541(00)00369-7.
    • El-Shazly AK, Bröcker M, Hacker B, & Calvert A. (). Formation and exhumation of blueschists and eclogites from NE Oman: new perspectives from Rb-Sr and Ar-40/Ar-39 dating. Journal of Metamorphic Geology, 19(3), 233–248. doi: 10.1046/j.1525-1314.2001.00309.x.
    • Papadopoulou L, Christofides G, Bröcker M, Koroneos A, Soldatos T, & Elefheriadis G. (). Petrology, geochemistry and isotopic characteristics of the shoshonitic plutonic roks from Maronia area, West Thrace, Greece. Bulletin of the Geological Society of Greece, XXXIV(3), 967–976.

    Research Articles (Journals)
    • Bröcker M, & Franz L. (). The contact aureole on Tinos (Cyclades, Greece): tourmaline-biotite geothermometry and Rb-Sr geochronology. Mineralogy and Petrology, 70(3-4), 257–283.
    • Graessner T, Schenk V, Bröcker M, & Mezger K. (). Geochronological constraints on the timing of granitoid magmatism, metamorphism and post-metamorphic cooling in the Hercynian crustal cross-section of Calabria. Journal of Metamorphic Geology, 18(4), 409–421.
    Research Articles in Edited Proceedings (Conferences)
    • Christofides G, Eleftheriades G, Esson J, Soldatos T, Koroneos A, & Bröcker M. (). The evolution of the Samothraki granitic pluton (N. Aegean Sea, Greece): geochronology, chemical and isotopic constraints for AFC modelling. , pp. 193–209. Proceedings of the Third International Conference on the Geology of the Eastern Mediterranean.

    • Klemd R, & Bröcker M. (). Fluid influence on mineral reactions in ultrahigh-pressure granulites: A case study in the Snieznik Mts. (West Sudetes, Poland). Contributions to Mineralogy and Petrology, 136(4), 358–373. doi: 10.1007/s004100050544.
    • Schüssler U, Bröcker M, Henjes-Kunst F, & Will T. (). P-T-t evolution of the Wilson Terrane metamorphic basement at Oates Coast, Antarctica. Precambrian Research, 93(2-3), 235–258. doi: 10.1016/S0301-9268(98)00091-6.
    • Bröcker M, & Enders M. (). U-Pb zircon geochronology of unusual eclogite-facies rocks from Syros and Tinos (Cyclades, Greece). Geological Magazine, 136(2), 111–118. doi: 10.1017/S0016756899002320.

    • Bröcker M, Zelaźniewicz A, & Enders M. (). Rb-Sr and U-Pb geochronology of migmatitic gneisses from the Gory Sowie (west Sudetes, Poland): The importance of Mid-Late Devonian metamorphism. Journal of the Geological Society, 155(6), 1025–1036. doi: 10.1144/gsjgs.155.6.1025.
    • Bröcker M, & Franz L. (). Rb-Sr isotope studies on Tinos Island (Cyclades, Greece): Additional time constraints for metamorphism, extent of infiltration-controlled overprinting and deformational activity. Geological Magazine, 135(3), 369–382. doi: 10.1017/S0016756898008681.

    • Bröcker M, & Klemd R. (). Ultrahigh-pressure metamorphism in the śnieznik mountains (Sudetes, Poland): P-T constraints and geological implications. Journal of Geology, 104(4), 417–433. doi: 10.1086/629837.

    • Bröcker M, & Day HW. (). Low-grade blueschist facies metamorphism of metagreywackes, Franciscan Complex, northern California. Journal of Metamorphic Geology, 13(1), 61–78. doi: 10.1111/j.1525-1314.1995.tb00205.x.
    • Klemd R, Bröcker M, & Schramm J. (). Characterisation of amphibolite-facies fluids of Variscan eclogites from the Orlica-Snieznik dome (Sudetes, SW Poland). Chemical Geology, 119(1-4), 101–113. doi: 10.1016/0009-2541(94)00096-Q.

    • Bröcker M, & Franz L. (). The contact aureole on Tinos (Cyclades, Greece). Part I: field relationships, petrography and P-T conditions). Chemie der Erde / Geochemistry, 54(4), 262–280.
    • Kleinschrot D, Klemd R, Bröcker M, Okrusch M, Franz L, & Schmidt K. (). Protores and country rocks of the Nsuta manganese deposit (Ghana). Protores and country rocks of the Nsuta manganese deposit (Ghana)., 168, 67–108.

    • Bröcker M, Kreuzer H, Matthews A, & Okrusch M. (). 40Ar/39Ar and oxygen isotope studies of polymetamorphism from Tinos Island, Cycladic blueschist belt, Greece. Journal of Metamorphic Geology, 11(2), 223–240. doi: 10.1111/j.1525-1314.1993.tb00144.x.
    • Franz L, Okrusch M, & Bröcker M. (). Polymetamorphic evolution of pre-Alpidic basement rocks on the island of Sikinos (Cyclades, Greece). Neues Jahrbuch für Mineralogie - Abhandlungen(4), 145–162.
    • Kleinschrot D, Klemd R, Bröcker M, Okrusch M, Franz L, & Schmidt K. (). The Nsuta manganese deposit, Ghana: geological setting, ore-forming process and metamorphic evolution. Zeitschrift fur Angewandte Geologie, 39, 48–50.

    • Bröcker M. (). Geochemistry of metabasic HP/LT rocks and their greenschist facies and contact metamorphic equivalents, Tinos Island (Cyclades, Greece). Chemie der Erde / Geochemistry, 51(155-171).

    • Bröcker M. (). Blueschist-to-greenschist transition in metabasites from Tinos Island, Cyclades, Greece: Compositional control or fluid infiltration? Lithos, 25(1-3), 25–39. doi: 10.1016/0024-4937(90)90004-K.
    • Okrusch M, & Bröcker M. (). Eclogites associated with high-grade blueschists in the Cyclades archipelago, Greece: a review. European Journal of Mineralogy, 2(4), 451–478.
    • Bröcker M. (). Die Blauschiefer-Grünschiefer-Assoziation der Insel Tinos (Kykladen, Griechenland) und ihre kontaktmetamorphe Überprägung. Geotektonische Forschungen, 74, 1–107.

    • Frisch W, Neubauer F, Bröcker M, Brückmann W, & Haiss N. (). Interpretation of geochemical data from the Caledonian basement within the Austoalpine basement complex. In (pp. 209–226). Bratislava: Alfa Publishers.