MetSoc 2020 rescheduled

Carbonaceous meteorite fall (>2.1 kg) in Sitahan Barat hamlet, Pasar Onan Hurlang, and Satahi Nauli area, Kolang subdistrict, Central Tapanuli Regency, North Sumatra, Indonesia at ~ 16:00 WIB (9 a.m. UTC) on 1 August 2020

‘Forrest (prov.)’ (18 November 2019) and ‘Madura Cave (prov.)’ (19 June 2020) – Two falls found on the Nullarbor Plain, Western Australia

Blaubeuren (30.260 kg, H4-5, S2, W3) meteorite find (1989) in Blaubeuren-Weiler (Alb-Donau-Kreis), Baden-Württemberg, Germany

On exhibition in Blaubeuren (30 July – 25 October)

Narashino (習志野市, Narashino-shi) (prov.) meteorite fall (~316 g)in Narashino and Funabashi (船橋), Chiba Prefecture, Japan on 1st July at 17.32.03-10 UT (2nd July, 2.32.03-10 a.m. JST)

Meteorite (~ 5 kg) fall in Bimbe (Limbe ?) village, Chitanda chiefdom, Chibombo District, Central Province, Zambia at ~7:00 a.m. CAT (~5:00 UT) on 7 June 2020

FLENSBURG (C1-ung, 24.5 g, W0) meteorite fall in Flensburg, Schleswig-Holstein, Germany on 12 September 2019 at ~14:49:48 CEST (~ 12:49:48 UTC)

Meteorite “Hocheppan” –
a Forensic Study

by Karl Wimmer

MetSoc position on Discrimination and Racial Bias

June 09, 2020

“The following message has been approved by the Council of the MetSoc:

Dear Meteoritical Society Members, We have been watching with the rest of the world the unfolding of recent events in the United States and the resulting turmoil. This brings home to us yet again that we have a ways to go before we achieve the just and equitable world that we all aspire to. If unacknowledged and unchecked, discrimination and injustice can enter any organization or community – and can destroy the very foundations upon which we are building our future. We are a small society, but our membership is diverse and spans the globe. As an international scientific society, and per our position statement on inclusiveness (https://meteoritical.org/society/governance/position-statement), we are committed to a diverse and inclusive community that promotes the well being of all its members. We realize that change comes with both small and bold steps in the right direction. As an example, we have asked our Endowment Committee to proactively consider support of initiatives and programs that promote diversity, equity, and inclusion in our community. We affirm that discrimination and injustice have no place at the Meteoritical Society, in science, or in society as a whole. I am confident in our ability to be a force for science, a force for good, and for positive change in society. It is our hope that we come together as colleagues and friends to support one another and to support others in our communities beyond our Society. Science, scientists, and science advocates are going to be critical to ensuring we successfully navigate these challenging times together.

Meenakshi Wadhwa, President, The Meteoritical Society”

Boron partitioning between zircon and melt: Insights into Hadean, modern arc, and pegmatitic settings ►

Reappraisal of purported ca. 3.7 Ga stromatolites from the Isua Supracrustal Belt (West Greenland) from detailed chemical and structural analysis ►

Compositional heterogeneity of Archean mantle estimated from Sr and Nd isotopic systematics of basaltic rocks from North Pole, Australia, and the Isua supracrustal belt, Greenland ►

Unraveling the complexity of zircons from the 4.0-2.9 Ga Acasta Gneiss Complex ►

An andesitic source for Jack Hills zircon supports onset of plate tectonics in the Hadean ►

Sulfidization of 3.48 billion-year-old stromatolites of the Dresser Formation, Pilbara Craton: Constraints from in-situ sulfur isotope analysis of pyrite ►

Paleomagnetism indicates that primary magnetite in zircon records a strong Hadean geodynamo ►

Origins of high δ18O in 3.7–3.6 Ga crust: A zircon and garnet record in Isua clastic metasedimentary rocks ►

A comparison between zircons from the Acasta Gneiss Complex and the Jack Hills region ►

Accumulation of Transition Metals and Metalloids in Sulfidized Stromatolites of the 3.48 Billion–year–old Dresser Formation, Pilbara Craton ►

Disturbances in the Sm–Nd isotope system of the Acasta Gneiss Complex—Implications for the Nd isotope record of the early Earth ►

The accumulation of non-formula elements in zircons during weathering: Ancient zircons from the Jack Hills Western Australia ►

Nano−porous pyrite and organic matter in 3.5-billion-year-old stromatolites record primordial life ►

Lack of late-accreted material as the origin of 182W excesses in the Archean mantle: Evidence from the Pilbara Craton, Western Australia ►

The Eoarchean legacy of Isua (Greenland) worth preserving for future generations ►

A new 3.59 Ga magmatic suite and a chondritic source to the east Pilbara Craton ►

Reassessing evidence of life in 3,700-million-year-old rocks of Greenland ►

Evidence for evolved Hadean crust from Sr isotopes in apatite within Eoarchean zircon from the Acasta Gneiss Complex ►

Petrogenesis and tectonics of the Acasta Gneiss Complex derived from integrated petrology and 142Nd and 182W extinct nuclide-geochemistry ►

Earth’s oldest stable crust in the Pilbara Craton formed by cyclic gravitational overturns ►

Most Ancient Evidence for Life in the Barberton Greenstone Belt: Microbial Mats and Biofabrics of the ∼3.47 Ga Middle Marker Horizon ►

Ideas and perspectives: hydrothermally driven redistribution and sequestration of early Archaean biomass – the “hydrothermal pump hypothesis” ►

HCN production via Impact Ejecta Reentry during the Late Heavy Bombardment ►

Secondary magnetic inclusions in detrital zircons from the Jack Hills, Western Australia, and implications for the origin of the geodynamo ►

The origin of the Moon within a terrestrial synestia ►

Halogen Chemistry and Hydrogen Isotopes of Apatite from the >3.7 Ga Isua Supracrustal Belt, SW Greenland ►

Remarkably preserved tephra from the 3430 Ma Strelley Pool Formation, Western Australia: Implications for the interpretation of Precambrian microfossils ►

A 4463 Ma apparent zircon age from the Jack Hills (Western Australia) resulting from ancient Pb mobilization ►

Cluster analysis on a sphere: Application to magnetizations from metasediments of the Jack Hills, Western Australia ►

SIMS analyses of the oldest known assemblage of microfossils document their taxon-correlated carbon isotope compositions ►

Geochronology of Hadean zircon grains from the Jack Hills, Western Australia constrained by quantitative scanning ion imaging ►

Spatially-resolved isotopic study of carbon trapped in ∼3.43 Ga Strelley Pool Formation stromatolites ►

SIMS Microanalysis of the Strelley Pool Formation Cherts and the Implications for the Secular-Temporal Oxygen-isotope Trend of Cherts ►

Earth’s volatile contents established by melting and vaporization ►

Magnesium isotope evidence that accretional vapour loss shapes planetary compositions ►

Early trace of life from 3.95 Ga sedimentary rocks in Labrador, Canada ►

Impact-driven subduction on the Hadean Earth ►

Cubic zirconia in >2370 °C impact melt records Earth’s hottest crust ►

Elements of Eoarchean life trapped in mineral inclusions ►

CO2 fluid inclusions in Jack Hills zircons ►

Processes of Crust Formation in the Early Earth Imaged through Hf isotopes from the East Pilbara Terrane ►

Earliest signs of life on land preserved in ca. 3.5 Ga hot spring deposits ►

Formation of Hadean granites by melting of igneous crust ►

Large and robust lenticular microorganisms on the young Earth ►

Tungsten-182 heterogeneity in modern ocean island basalts ►

Evidence for early life in Earth’s oldest hydrothermal vent precipitates ►

Earth’s first stable continents did not form by subduction ►

SHRIMP U–Pb zircon geochronology establishes that banded iron formations are not chronostratigraphic markers across Archean greenstone belts of the Pilbara Craton ►

The Hunt for Shocked Zircon in the Jack Hills: 21,000 and Counting… ►

Initiation of plate tectonics in the Hadean: Eclogitization triggered by the ABEL Bombardment ►

Highly siderophile element and 182W evidence for a partial late veneer in the source of 3.8 Ga rocks from Isua, Greenland ►

Iron and oxygen isotope fractionation during iron UV photo-oxidation: Implications for early Earth and Mars ►

Coupled zircon Lu–Hf and U–Pb isotopic analyses of the oldest terrestrial crust, the >4.03 Ga Acasta Gneiss Complex ►

Sluggish Hadean geodynamics: Evidence from coupled 146,147Sm–142,143Nd systematics in Eoarchean supracrustal rocks of the Inukjuak domain (Québec) ►

The effect of weathering on U-Th-Pb and oxygen isotope systems of ancient zircons from the Jack Hills, Western Australia ►

No evidence for Hadean continental crust within Earth’s oldest evolved rock unit ►

Rapid emergence of life shown by discovery of 3,700-million-year-old microbial structures ►

Petrology and geochemistry of mafic rocks in the Acasta Gneiss Complex: Implications for the oldest mafic rocks and their origin ►

Recovering the primary geochemistry of Jack Hills zircons through quantitative estimates of chemical alteration ►

The birth of a cratonic nucleus: lithogeochemical evolution of the 4.02–2.94 Ga Acasta Gneiss Complex ►

Preservation of Earth-forming events in the tungsten isotopic composition of modern flood basalts ►

Geochemistry and Nd isotopic characteristics of Earth’s Hadean mantle and primitive crust ►

Early Earth Differentiation Investigated Through 142Nd, 182W, and Highly Siderophile Element Abundances in Samples From Isua, Greenland ►

Excavation and Melting of the Hadean Continental Crust by Late Heavy Bombardment ►

Potentially biogenic carbon preserved in a 4.1 billion-year-old zircon ►

Core formation and core composition from coupled geochemical and geophysical constraints ►

Pervasive remagnetization of detrital zircon host rocks in the Jack Hills, Western Australia and implications for records of the early geodynamo ►

— Comment by R. Bono et al (4 July 2016) ►

— Benjamin P. Weiss et al. (19 July) Reply to Comment by R. Bono et al (4 July 2016) ►