Results 91 to 100 of about 274,214 (382)
The Depositional Record, EarlyView.We produced the first reconstruction of the coral species composition of MIS5d–a reefs in the Florida Keys and compared it with existing regional records from MIS5e, the Holocene, the recent past (1996) and the present (2022) to evaluate how Florida's reefs changed throughout the late Quaternary.
Lauren T. Toth +3 more
wiley +1 more source
Primordial origins of Earth's carbon [PDF]
arXiv, 2012 In this chapter we review the astrophysical origins of Earth's carbon, starting from the products of the Big Bang and culminating with the Earth's formation. We review the measured compositions of different primitive objects including comets, various classes of meteorites and interstellar dust particles.
arxiv
Lacustrine and fan‐delta sediments in syn‐rift lake basins
The Depositional Record, EarlyView.A consistent model for the sequence framework and depositional pattern of asymmetric half‐grabens in syn‐rift lake basins bounded by active faults has been established, complementing existing models for marine rift successions. Syn‐rift lake basins are characterised by relatively small dimensions, steep slopes, poorly developed shoreline strata ...
Qianyou Wang +6 more
wiley +1 more source
Super-Earths and Earth-like Exoplanets [PDF]
Treatise on Geochemistry, 3rd edition (2024)In the last few years astronomical surveys have expanded the reach of planetary science into the realm of small and dense extrasolar worlds. These share a number of characteristics with the terrestrial and icy planetary objects of the Solar System, but keep stretching previous understanding of the known limits of planetary thermodynamics, material ...
arxiv +1 more source
New Advances, Challenges, and Illustrations in Applied Geochemistry
Applied SciencesThe Special Issue ‘New Advances and Illustrations in Applied Geochemistry in China’ was organized for the presentation of ideas from the 9th National Conference on Applied Geochemistry in China held in Chengdu, Sichuan Province, in October 2023 [...]
Qingjie Gong, Zeming Shi
doaj +1 more source
A hydrous melting and fractionation model for mid-ocean ridge basalts: Application to the Mid-Atlantic Ridge near the Azores [PDF]
, 2004 The major element, trace element, and isotopic composition of mid-ocean ridge basalt glasses affected by the Azores hotspot are strongly correlated with H2O content of the glass.
Asimow, Paul D. +2 more
core +2 more sources
The Depositional Record, EarlyView.A limestone cave in the NW Dinarides exhibits an anomalous presence of montmorillonite clay, not commonly found in surrounding caves, posing questions about its origin and age. Analysis reveals a composition similar to weathered tephra from the Smrekovec Volcanic Complex, suggesting transport by north‐east winds.
Nadja Zupan Hajna +12 more
wiley +1 more source
New Applications in Gas Geochemistry
Geofluids, 2020 Gases present in the Earth crust are important in various branches of human activities. Hydrocarbons are a significant energy resource, helium is applied in many high-tech instruments, and studies of crustal gas dynamics provide insight in the geodynamic
Francesco Italiano +4 more
doaj +1 more source
Anomalous negative excursion of carbon isotope in organic carbon after the last Paleoproterozoic glaciation in North America [PDF]
, 2010 Early Paleoproterozoic time (2.5–2.0 Ga) spanned a critical phase in Earth's history, characterized by repeated glaciations and an increase in atmospheric oxygen (the Great Oxidation Event (GOE)).
Bekker +41 more
core +1 more source
The first 25 years of satellite carbonate sedimentology: What have we learned?
The Depositional Record, EarlyView.Observations of the suspension and transport of carbonate sediments from reefs, banks and shallow shelves have been made by satellite instruments for ca 25 years. With an increasing number of instruments in space, providing advanced observational capabilities, remarkable insights have been gained concerning carbonate sedimentological processes. Details
James G. Acker, R. Jude Wilber
wiley +1 more source