Results 101 to 110 of about 283,740 (237)

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

Disturbance from restoration reseeding is associated with short‐term topsoil carbon loss and alters soil bacterial communities and functions in degraded alpine meadows of the Qinghai–Xizang Plateau

Grassland Research, EarlyView.
Restoration reseeding of degraded alpine meadows increased aboveground vegetation but was associated with short‐term topsoil carbon loss, coinciding with a microbial strategy shift from resident carbon‐preserving to carbon‐spending bacterial guilds. Abstract Background Restoration of degraded ecosystems is widely promoted as a nature‐based solution ...
Long‐Tao Zhu, Wen‐Min Shi, Guang‐Peng Qu, Xu Yin, Yong‐Kang Zhang, Ying‐Jie Sun, Zhen Luo, Wei Li, Chun‐Ping Zhang, Jie‐Jun Xi   +9 more
wiley   +1 more source

Younger Dryas reindeer in northwest Europe: A multi-isotope study of the palaeoecology and mobility of Chelm’s Combe fauna, Britain

Quaternary Environments and Humans
Reindeer ( Rangifer tarandus ) played a central role in the subsistence strategies of Late and Final Palaeolithic populations across northern Europe, particularly during the Younger Dryas (c. 12,850–11,650 cal BP).
Rhiannon E. Stevens, Hazel Reade, Delphine Frémondeau, Kerry L. Sayle, Jennifer A. Tripp, Thomas Higham, David J. Wilson   +6 more
doaj   +1 more source

Ostracod faunal and geochemical evidence for the impact of Hoxnian (MIS 11c) sea levels in eastern England

Journal of Quaternary Science, EarlyView.
ABSTRACT Marine isotope substage 11c (~426–366 ka) is widely regarded as the most recent Pleistocene interglacial that is broadly analogous to the Holocene. The timing and magnitude of sea‐level changes during MIS 11 have been much debated, particularly concerning whether sea levels were significantly higher than during the Holocene. Empirical evidence
Tom S. White, Jonathan A. Holmes, David J. Horne, David R. Bridgland   +3 more
wiley   +1 more source

Relative dating of deposits of the Mishan Formation based on foraminifera and Strontium isotope in northwest and west of Bandar Abbas, south Iran [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2016
For studying of biostratigraphy of Mishan Formation in Bandar Abbas hinterland, a stratigraphic transection including Handun, Anguru, Baviyun, and Nakh sections was selected in northwest and west of Bandar Abbas.
Jahanbakhsh Daneshian, Mariam Daneshian, Ali Moaمlemi   +2 more
doaj  

Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool

Journal of Quaternary Science, EarlyView.
ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith, Danielle McLean, Eloise Wilkinson‐Rowe, Emma L. Horn, Gavin Kane, Christopher Bronk Ramsey   +5 more
wiley   +1 more source

Application of hydrochemistry and strontium isotope for understanding the hydrochemical characteristics and genesis of strontium-rich groundwater in karst area, Gongcheng County, Southwest China

Journal of Groundwater Science and Engineering
Understanding the hydrochemical characteristics and genesis mechanisms of strontium-rich groundwater is pivotal for supporting the exploitation and utilization of natural strontium-rich groundwater. In this research, 27 groundwater samples were collected.
Mi Tang, Jun Lv, Shi Yu, Yan Liu, Shao-hong You, Ping-ping Jiang   +5 more
doaj   +1 more source

Ngarrawa (mound spring) sediments as archives of Holocene environmental change in arid central Australia: Insights from Itrax XRF scanning

Journal of Quaternary Science, EarlyView.
ABSTRACT Central Australia's ngarrawa, or ‘mound springs’, are unique hydrological systems that serve as some of the only near‐permanent sources of water and continuous sediment deposition in Australia's arid interior. As such, they hold significant potential as palaeo‐climate and ‐environmental archives in a region where many aspects of past climate ...
Fletcher C. Nixon, Jonathan J. Tyler, Patricia S. Gadd, Quan Hua   +3 more
wiley   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

(Table 1) Stable and strontium isotope ratios of early Miocene to Oligocene samples of ODP Hole 130-803D

, 1993
(Table 1) Stable and strontium isotope ratios of early Miocene to Oligocene samples of ODP Hole 130 ...
Barrera, Enriqueta C, Lohmann, Kyger C, Kyger C Lohmann (7044236), Jack G Baldauf (6886952), Enriqueta C Barrera (7909346), Baldauf, Jack G   +5 more
core   +1 more source