Results 11 to 20 of about 5,717 (242)

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+3 more sources

Elemental composition and radiogenic isotopes of North African soils to characterize Saharan and Sahelian dust sources [PDF]

open access: yes, 2022
Fifty-nine bulk soil samples were from a collection known as the “Mainz Sandbank”, comprising samples from across the Sahara-Sahel region collected on multiple field trips since 1970.
Andreae, Meinrat O   +7 more
core   +1 more source

Late Miocene radiogenic Sr, Nd, and Pb isotope data of the detrital clay fraction from IODP Site 353-U1443 [PDF]

open access: yes, 2021
Data from Enhanced late Miocene chemical weathering and altered precipitation patterns in the watersheds of the Bay of Bengal recorded by detrital clay radiogenic isotopes in Paleoceanography and Paleoclimatology.
Gray, Emmeline   +9 more
core   +1 more source

(Table 2) Arctic Ocean down core leachate and bulk digest radiogenic isotope data of composite sediment core PS2185 [PDF]

open access: yes, 2008
(Table 2) Arctic Ocean down core leachate and bulk digest radiogenic isotope data of composite sediment core ...
Robert F Spielhagen (6885341)   +7 more
core   +1 more source

Isotopic Compositions of Plagioclase From Plutonic Xenoliths Reveal Crustal Assimilation Below Martinique, Lesser Antilles Arc

open access: yesFrontiers in Earth Science, 2021
The chemical and isotopic compositions of volcanic arc lavas often show evidence for involvement of a sedimentary component during magma genesis. Determining where this sedimentary component is added to arc magmas is of vital importance for constraining ...
J. R. Brown   +5 more
doaj   +1 more source

The Variable Influences of Sea Level, Sedimentation and Exposure on Holocene Reef Development over a Cross-Shelf Transect, Central Great Barrier Reef

open access: yesDiversity, 2018
Coral reefs globally are impacted by natural and anthropogenic stressors that are compounded by climate change. Understanding past reef responses to natural stressors (cyclones, sea-level change, freshwater inputs, and sedimentation) can provide ...
Emma J. Ryan   +4 more
doaj   +1 more source

Strontium isotopes and the reconstruction of the Chaco regional system: evaluating uncertainty with Bayesian mixing models. [PDF]

open access: yesPLoS ONE, 2014
Strontium isotope sourcing has become a common and useful method for assigning sources to archaeological artifacts.In Chaco Canyon, an Ancestral Pueblo regional center in New Mexico, previous studiesusing these methods have suggested that significant ...
Brandon Lee Drake   +3 more
doaj   +1 more source

Determination of the origin and recharge process of water resources in Salda Lake Basin by using the environmental, tritium and radiocarbon isotopes (Burdur/Turkey)

open access: yesBulletin of the Mineral Research and Exploration, 2020
The Salda Lake basin which is in the southwestern Turkey is an important water body in view of environmental values. We used stable isotopes (δD and δ18O), δ3H and 14C composition of the water samples to understand recharge process effective in the ...
Simge VAROL   +6 more
doaj   +1 more source

(Appendix A2) Radiogenic isotope ratios of ODP Site 178-1095B [PDF]

open access: yes, 2009
(Appendix A2) Radiogenic isotope ratios of ODP Site 178 ...
van der Pluijm, Ben A   +7 more
core   +1 more source

Prehistorical and historical declines in Caribbean coral reef accretion rates driven by loss of parrotfish

open access: yesNature Communications, 2017
Fishing of keystone herbivores such as parrotfish is thought to negatively impact corals. Here, Cramer and colleagues analyse the sedimentary record for the last 3,000 years from three coral reef sites in the Caribbean and show that indeed coral declines
Katie L. Cramer   +4 more
doaj   +1 more source

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