Michael W. Foerster

Michael W. Foerster
Macquarie University · Department of Earth and Environmental Sciences

Doctor of Philosophy

About

46
Publications
13,126
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
285
Citations
Additional affiliations
April 2019 - present
Macquarie University
Position
  • PostDoc Position
January 2016 - January 2019
Macquarie University
Position
  • PhD Student
July 2015 - January 2016
Johannes Gutenberg-Universität Mainz
Position
  • Research Assistant

Publications

Publications (46)
Article
2022): Mineralogy and PGE geochemistry of chromitites and peridotites of the sapat complex in the indus suture zone, northern Pakistan: implications for magmatic processes in the supra-subduction zone, International Geology Review, ABSTRACT The Sapat Complex in Northern Pakistan contains remnants of the northern Neo-Tethys Ocean, presently exposed...
Article
Full-text available
The Bin Yauri-Libata polymetallic ore district is a Sn and Au ore-bearing district in the Zuru schist belt, Northwestern Nigeria. The Libata Sn ore field is characterized by a set of cassiterite-bearing hydrothermal veins associated with Neoproterozoic Pan-African granites affected by deformation and low-grade metamorphism. The hydrothermal alterat...
Article
Key Points Literature review of 7200 geoanalytical publications for the year 2020. 628 selected articles with summaries of target analytes, relevant reference materials and producers. Selected publications include data obtained by new analytical developments and improved analytical protocols for established RMs, and identifies recently developed RM...
Article
Full-text available
The Wandashan accretionary complex (AC) is located in the easternmost part of Northeast China and consists of the Raohe complex in the east and Yuejinshan complex in the west. It represents an excellent location for insights into Paleo-Pacific subduction and accretion processes. However, the protolith (mainly contains Ocean Plate Stratigraphy 'OPS'...
Preprint
Full-text available
Silicate melts in arc environments are dominated by mafic (low-silica) and silicic (high-silica) compositions, often generating a characteristic bimodal pattern. We investigate the whole arc crust and show that the plutonic lower crust shares the bimodal pattern of melts from volcanoes. This key observation reveals that, contrary to some explanatio...
Article
Full-text available
Subduction of oceanic crust buries an average thickness of 300-500 m of sediment that eventually dehydrates or partially melts. Progressive release of fluid/melt metasomatizes the fore-arc mantle, forming serpentinite at low temperatures and phlogopite-bearing pyroxenite where slab surface reaches 700-900 °C. This is sufficiently high to partially...
Article
Full-text available
Remobilization of sedimentary carbonate in subduction zones modulates arc volcanism emissions and thus Earth’s climate over geological timescales. Although limestones (or chalk) are thought to be the major carbon reservoir subducted to subarc depths, their fate is still unclear. Here we present high-pressure reaction experiments between impure lime...
Article
Syn-exhumation mafic magmatism during continental collision provides insights into the crust-mantle reaction during deep subduction and the nature of orogenic lithospheric mantle in collisional orogens. In this study, we present a comprehensive data set of zircon U-Pb ages and whole-rock major-trace elements as well as Sr-Nd-Pb isotopes of alkaline...
Article
The Benue Trough of Nigeria is an intracratonic rift basin hosting several vein-type base metal deposits. The Akiri Cu ± (Ag) deposit represents a distinct sub-class of sediment-hosted Pb-Zn-Cu-Ba mineralization found throughout the Benue Trough. The deposit is hosted in bleached red beds of the Keana Formation and in shale-siltstones and carbonate...
Conference Paper
Full-text available
Photo-Induced Force Microscopy (PiFM) is a promising new nanoanalytical imaging technique that offers simultaneous acquisition of 3D topographic data with molecular compound identification at the nanoscale. Contrasting to many other molecular compound identification techniques that cannot operate beyond the diffraction limit of light, PiFM takes ad...
Article
Full-text available
Sediments play a key role in subduction. They help control the chemistry of arc volcanoes and the location of seismic hazards. Here, we present a new model describing the fate of subducted sediments that explains magnetotelluric models of subduction zones, which commonly show an enigmatic conductive anomaly at the trenchward side of volcanic arcs....
Article
Full-text available
Photo‐induced force microscopy (PiFM) is a new‐frontier technique that combines the advantages of atomic force microscopy with infrared spectroscopy and allows for the simultaneous acquisition of 3D topographic data with molecular chemical information at high spatial (~ 5 nm) and spectral (~ 1 cm‐1) resolution at the nanoscale. This non‐destructive...
Article
Full-text available
This bibliographic review gives an outline on publications in 2019 focusing on reference materials (RMs) used in geochemistry and related fields such as palaeoclimate or environmental research. The survey has included 6850 individual publications from more than twenty scientific (i.e., peer‐reviewed) journals. Nearly 700 of these articles include p...
Article
Full-text available
The generation of strongly potassic melts in the mantle requires the presence of phlogopite in the melting assemblage, while isotopic and trace element analyses of ultrapotassic rocks frequently indicate the involvement of subducted crustal lithologies in the source. However, phlogopite-free experiments that focus on melting of sedimentary rocks an...
Article
Full-text available
The Eifel Laminated Sediment Archive (ELSA), which comprises several cores from maar lakes, includes numerous tephra layers spanning the last 140 000 years. The sediment cores are dated by 14C and thermoluminescence as well as tuned to Greenland stadial–interstadial successions. Within the last glacial cycle, the Eifel Volcanic Fields are source to...
Article
Potassium-rich lavas with K/Na of >2 are common in orogenic and anorogenic intraplate magmatic provinces. However, in the primitive mantle, the concentration of Na exceeds that of K by 10 times. The source of K-rich lavas thus needs to be either K-enriched or Na-depleted to account for high K/Na ratios. The geochemical and isotopic compositions of...
Article
Full-text available
Diamonds growing in the Earth's mantle often trap inclusions of fluids that are highly saline in composition. These fluids are thought to emerge from deep in subduction zones and may also be involved in the generation of some of the kimberlite magmas. However, the source of these fluids and the mechanism of their transport into the mantle lithosphe...
Thesis
In total, subduction zones span 40,000 km across Earth’s surface and recycle an average thickness of 500 m of sediment. During burial and heating these sediments eventually start melting at T >675 °C, following which Si-rich hydrous melts infiltrate the peridotites of the mantle wedge above the subducting slab. In this thesis, a high-pressure expe...
Article
Full-text available
This volume, edited by Andri Stefánsson, Thomas Driesner, and Pascale Bénézeth, is an extended review of the topics covered at the “Thermodynamics of Geothermal Fluids” short course held on August 24–25, 2013, prior to the 23rd Goldschmidt Conference in Florence, Italy. It is comprised of 9 chapters written by 22 authors. The book covers all domain...
Article
Full-text available
Danburite is a calcium borosilicate that forms within the transition zones of metacarbonates and pegmatites as a late magmatic accessory mineral. We present here trace element contents obtained by femtosecond laser ablation-inductively coupled plasma (ICP)-mass spectrometry for danburite from Mexico, Tanzania, and Vietnam. The Tanzanian and Vietnam...
Article
In this study, we show how veined lithospheric mantle is involved in the genesis of ultrapotassic magmatism in cratonic settings. We conducted high pressure experiments to simulate vein + wall rock melting within the Earth's lithospheric mantle by reacting assemblages of harzburgite and phlogopite-rich hydrous mantle xenoliths. These comprised a mi...
Conference Paper
Full-text available
Nitrogen, the most abundant element of Earth's atmosphere, is also an important constituent in high pressure fluids, melts and mineral phases. The recycling of surficial nitrogen to mantle depths is thought to be connected to potassium-bearing silicates in subduction zones, whereby micas play an important role. Phlogopite is stable in ultramafic ro...
Article
Full-text available
The book entitled Layered Intrusions is a well-sized collection of 15 chapters written by 36 authors—each being an expert in their prevailing sub-discipline. Hence, the book covers all aspects of the emplacement and evolution of large mafic to ultramafic magma chambers. All chapters provide a broad introduction to their topics and are richly illust...
Article
Abstract Tectonically young, orogenic settings are commonly the sites of post-collisional silica-rich ultrapotassic magmas with extreme K2O-contents of up to 9 wt% and K2O/Na2O > 2. Many experimental studies investigating the generation of these melts have concentrated on melting of homogenous phlogopite bearing peridotites, whereas geochemical sig...
Conference Paper
Full-text available
Femtosecond laser ablation-inductively coupled plasma-mass spectrometry was used to determine the concentration of 51 elements, i.e. Li, Be, B, Na, Mg, Al, Si, K, Sc, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Y, Zr, Nb, Ag, Cd, Sn, Sb, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Pt, Au and Tl in danburites fr...
Conference Paper
Full-text available
Previous experimental studies demonstrated that the concept of the melting of phlogopite-or/and amphibole bearing homogeneously metasomatized mantle is unable to fully comprehend most of the geochemical features of lavas with extremely high K2O and K2O/Na2O up to 9 wt% and >> 2, respectively. An alternative scenario is that metasomatic phases are p...
Conference Paper
Full-text available
Mica-amphibole-rutile-ilmenite-diopside (MARID) xenoliths are alkali-rich, coarse-grained ultramafic rocks, typically found in mantle-nodules of the cratonic lithosphere. These xenoliths are also known as Glimmerites as they contain >90 wt.% phlogopite. They represent a group of metasomatic mineral assemblages from the lithosphere-asthenosphere bou...
Article
Full-text available
Abstract Laminated sediment records from several maar lakes and dry maar lakes of the Eifel (Germany) reveal the history of climate, weather, environment, vegetation, and land use in central Europe during the last 60,000 years. The time series of the last 30,000 years is based on a continuous varve counted chronology, the MIS3 section is tuned to t...
Article
Tephra layers of individual volcanic eruptions are traced in several cores from Eifel maar lakes, drilled between 1998 and 2014 by the Eifel Laminated Sediment Archive (ELSA). All sediment cores are dated by 14C and tuned to the Greenland interstadial succession. Tephra layers were characterized by the petrographic composition of basement rock frag...
Conference Paper
Full-text available
Geological background: Ultrapotassic lavas are widespread in the Alpine-Himalayan belt. Extreme enrichment in incompatible elements, trace elements and radiogenic isotopes point at indirect crustal contamination of their mantle source, whereas high-forsterite olivine and refractory Cr-spinel phenocrysts suggest their origination from depleted mantl...
Conference Paper
Full-text available
Mica-amphibole-rutile-ilmenite-diopside (MARID) xenoliths are alkali-rich, coarse-grained ultramafic rocks, typical for heavily metasomatized subcontinental lithospheric mantle (Dawson & Smith, 1977). They are produced either by interaction of mantle wall rock with lamproitic melts that percolate through the mantle (Dawson and Smith 1977; Sweeney 1...
Conference Paper
Full-text available
The West Eifel Volcanic Field, situated in southwest Germany was dominated by two phases of volcanism. The older phase formed the center of the volcanic field and occurred 750,000 to 400,000 BP. Following a hiatus of 300,000 years, a younger phase of volcanism started around 130,000 BP. This phase was dominated by two contrasting magma sources. The...
Conference Paper
Full-text available
Tephrochronology is based on widely dispersive volcanic ash layers which are used to date stratigraphic units. Most tephrochronological studies applied geochemical observations e.g. Pouclet and Juvigne (2009). This study however, uses the specific ratios of different grain types in the volcanic ash. To reconstruct the tephrochronology of the Eifel...

Questions

Questions (2)
Question
I have a global average that roughly estimates 40.000 km subduction of 500 m sediment thickness at a convergence rate of 5 cm/year. Does someone know if there is there a publication that estimates the amount of sediments subducted in the individual subduction zones with better estimates regarding sediment thickness and convergence rate?
Question
Sanidine gives a defined spectra, however NH4-feldspar (Buddingtonite) doesn't show a proper signal. Shouldn't both minerals have similar vibrations in the silicate lattice?

Network

Cited By

Projects

Projects (4)
Project
We simulate non-equilibrium reaction experiments that are analogue to the vein-plus-wall-rock melting model (Foley, 1992), to produce phlogopite-rich metasomes as a result of interaction between crustal-derived melt and mantle.
Project
Develop and demonstrate new applications for laser ablation inductively coupled plasma time-of-flight mass spectrometry (LA-ICP-TOF-MS) using the TOFWERK icpTOF family of instruments (https://www.tofwerk.com/products/icptof/).
Project
This project follows an experimental approach to investigate the behaviour of nitrogen upon prograde metamorphism in subduction zones and during partial melting of the mantle and crust.