Results 91 to 100 of about 6,999 (163)

Lithology and provenance of late Eocene - Oligocene sediments in eastern Taranaki Basin margin and implications for paleogeography

open access: yes, 2009
The latest Eocene and Oligocene was a time of marked paleoenvironmental change in Taranaki Basin, involving a transition from the accumulation of coal measures and inner shelf deposits to the development of upper bathyal environments. Up until the end of
Hopcroft, Bradley Scott
core  

Long story encrypted in a small grain – zircon from meta-andesite in the Lower Köli Nappes reveals a complex history of the Virisen Arc Terrane, Scandinavian Caledonides, Sweden

open access: yesMineralogia
This short report presents the investigation results on the zircon from meta-andesitic rock from the Ankarede Volcanite Formation of the Lower Köli Nappe Complex in Scandinavian Caledonides. Previous U-Pb dating revealed a wide span of dates ranging from
Walczak Katarzyna A.   +4 more
doaj   +1 more source

Zircon U-Pb ages and geochemical characteristics of granitoids in Nagqu area, Tibet

open access: yes, 2015
This paper reports zircon LA-ICP-MS U-Pb ages and Fif-O isotopic ratios, and whole-rock major and trace element data of Early Cretaceous felsic intrusive rocks from Nagqu area, the northern Lhasa subterrane, southern Tibet.
Hu, Yong-Bin   +7 more
core   +1 more source

Thermo‐Tectonic History of Archean Basement Rocks in the Aktash Tagh, Southeastern Tarim Craton: Constraints From Zircon U‐Pb, Zircon and Apatite Fission‐Track Dating

open access: yesGeochemistry, Geophysics, Geosystems
Stable craton lithosphere can undergo complex tectonic events at its margins due to peripheral tectonic activity. In this study, we conducted a comprehensive analysis of zircon U‐Pb dating, apatite and zircon fission‐track thermochronology on the Aktash ...
Xiao Hu   +6 more
doaj   +1 more source

Geochemical characteristics and provenance of lithium in the Late Permian Heshan Formation coal-bearing series from the Wanfu mining area, Shanglin, Guangxi Province

open access: yesMeitan xuebao
Lithium element enrichment is widely observed in the coal-bearing series of the Late Permian Heshan Formation in Shanglin, Guangxi, which has potential economic value and research significance.
Degao ZHANG   +7 more
doaj   +1 more source

Detrital zircon U/Pb ages from the Nankai subduction zone (Japan)

open access: yes
U-Pb zircon age dating was applied on U-channel samples (30cc) that were collected from sandy deposits in cores from IODP Site C0024 (one sample; frontal Nankai accretionary Prism), ODP Site 1177 (two samples; Western Shikoku Basin) and IODP sites C0011 (
Pickering, Kevin T   +2 more
core   +1 more source

The deglaciation of the northwest sector of the last British-Irish ice sheet : integrating onshore and offshore data relating to chronology and behaviour

open access: yes, 2013
It is now accepted that the last British-Irish Ice Sheet (BIIS) was highly dynamic and drained by numerous fast flowing ice streams. This dynamic nature combined with its maritime location made the BIIS sensitive to the rapid climate change that ...
Small, David
core  

Complex Paleozoic magmatic and metamorphic evolution in the Argentera Massif (Western Alps) resolved with U-Pb dating

open access: yes, 2001
The timing of pre-Alpine magmatism and metamorphism in the Gesso-Stura Terrain (NW Argentera massif, External Crystalline Massifs) has been investigated by U-Pb dating.
Colombo, F.   +7 more
core  

New U-Pb zircon data from the Évora Massif and correlation to the Galiza-Trás-os- Montes Zone basal units

open access: yes, 2023
Resumo alargadoSUMMARY: We present new U-Pb zircon data from the Évora Massif (SW Ossa–Morena Zone). Série Negra paragneiss of Escoural Fm. yields a maximum depositional age of ~580 Ma.
Cachapuz, P.   +3 more
core  

A database of detrital zircon U–Pb ages in the North China Craton from the Paleoproterozoic to the early Palaeozoic

open access: yesGeoscience Data Journal
U–Pb dating of detrital zircon is widely used in geology to identify the source of sediments and constrain palaeogeography and tectonic history. We collected the detrital zircon from the Paleoproterozoic to early Palaeozoic strata to understand the North
Yiming Dong   +6 more
doaj   +1 more source

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