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Syn-metamorphic sulfidation of the Gamsberg zinc deposit, South Africa
(
- Mineralogy and Petrology
, 2021-09-06)
The Mesoproterozoic Aggeneys-Gamsberg ore district, South Africa, is one of the world´s largest sulfidic base metal concentrations and well-known as a prime example of Broken Hill-type base metal deposits, traditionally ...
Latest Carboniferous to early Permian volcano-stratigraphic evolution in Central Europe: U–Pb CA–ID–TIMS ages of volcanic rocks in the Thuringian Forest Basin (Germany)
(
- International Journal of Earth Sciences
, 2020-11-23)
Mainly acidic Stephanian to early Permian volcanic rocks and intercalated sediments accumulated in the Thuringian Forest Basin (TFB) in central Germany to a total thickness of ca. 2000 m. This basin offers a wide range of ...
Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan
(
- International Journal of Earth Sciences
, 2020-11-24)
The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite ...
Soil greenhouse gas fluxes following conventional selective and reduced-impact logging in a Congo Basin rainforest
(
- Biogeochemistry
, 2020-11-03)
Selective logging is among the main causes of tropical forest degradation, but little is known about its effects on greenhouse gas (GHG) fluxes from highly weathered Ferralsol soils in Africa. We measured soil CO2, N2O, ...
Dissolved, Labile, and Total Particulate Trace Metal Dynamics on the Northeast Greenland Shelf
(
- Global Biogeochemical Cycles
, 2022-11-28)
We present high‐resolution profiles of dissolved, labile, and total particulate trace metals (TMs) on the Northeast Greenland shelf from GEOTRACES cruise GN05 in August 2016. Combined with radium isotopes, stable oxygen ...
Ocean resurge-induced impact melt dynamics on the peak-ring of the Chicxulub impact structure, Mexico
(
- International Journal of Earth Sciences
, 2021-03-18)
Core from Hole M0077 from IODP/ICDP Expedition 364 provides unprecedented evidence for the physical processes in effect during the interaction of impact melt with rock-debris-laden seawater, following a large meteorite ...
Twinned calcite as an indicator of high differential stresses and low shock pressure conditions during impact cratering
(
- Meteoritics & Planetary Science
, 2023-08-02)
<title xmlns:mml="http://www.w3.org/1998/Math/MathML">Abstract</title><p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">Shock‐related calcite twins are characterized in calcite‐bearing metagranite cataclasites ...
Origin of 182W Anomalies in Ocean Island Basalts
(
- Geochemistry, Geophysics, Geosystems
, 2023-02-18)
Ocean island basalts (OIB) show variable <sup>182</sup>W deficits that have been attributed to either early differentiation of the mantle or core‐mantle interaction. However, <sup>182</sup>W variations may also reflect ...
Quantifying Ice‐Sheet Derived Lead (Pb) Fluxes to the Ocean; A Case Study at Nioghalvfjerdsbræ
(
- Geophysical Research Letters
, 2022-11-07)
Concentrations of the toxic element lead (Pb) are elevated in seawater due to historical emissions. While anthropogenic atmospheric emissions are the dominant source of dissolved Pb (dPb) to the Atlantic Ocean, evidence ...
Sources of Inaccuracy in Boron Isotope Measurement Using LA‐MC‐ICP‐MS
(
- Geostandards and Geoanalytical Research
, 2023-06-08)
<p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">Laser ablation multi‐collector‐inductively coupled plasma‐mass spectrometry (LA‐MC‐ICP‐MS) has become a valuable tool for the <italic toggle="no">in situ</italic> ...