Results 61 to 70 of about 2,007 (165)

Cryptic Disc Structures Resembling Ediacaran Discoidal Fossils from the Lower Silurian Hellefjord Schist, Arctic Norway.

PLoS ONE, 2016
The Hellefjord Schist, a volcaniclastic psammite-pelite formation in the Caledonides of Arctic Norway contains discoidal impressions and apparent tube casts that share morphological and taphonomic similarities to Neoproterozoic stem-holdfast forms.
Christopher L Kirkland, Breandán A MacGabhann, Brian L Kirkland, J Stephen Daly   +3 more
doaj   +1 more source

A users guide to Neoproterozoic geochronology

, 2017
Geochronology is essential for understanding Neoproterozoic Earth history. Here we review the types of rocks and minerals that are used to date geologic events and the analytical protocols for the different radio-isotopic decay systems employed. We discuss the limitations and potential of these methodologies for dating Neoproterozoic stratigraphy ...
Condon, Daniel, Bowring, Samuel
openaire   +3 more sources

Making the Implicit Explicit: Documenting the Hidden Assumptions in Conceptual Models

Hydrological Processes, Volume 40, Issue 3, March 2026.
Recognition of the role of the Mental Model Domain and the analysis tool choice as part of a project's workflow. The workflow consists of three domains; the Problem Domain, Mental Model Domain, and Model Domain. The shape of the text box indicates whether the stage includes an interim reporting step (rectangular) or whether the reporting step occurs at
Saskia L. Noorduijn, Luk Peeters, Sarah K. Marshall, Amir Jazayeri, Okke Batelaan   +4 more
wiley   +1 more source

Evolution of the Transantarctic Basin (Southern Gondwana): Insights From Quantitative Sandstone Petrography

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
The deposition of the sandstone sedimentary succession of the Beacon Supergroup lasted more than 200 Myr (Devonian to Early Jurassic) in Victoria Land and nearby territories in the so‐called Transantarctic Basin, recording crucial events in the history of the Earth.
Luca Zurli, Marco Fioraso, Matteo Perotti, Andrea Di Giulio, Valerio Olivetti, Samuele Pezzoli, Valentina Corti, Gianluca Cornamusini   +7 more
wiley   +1 more source

Magmatic and tectonic evolution of the Chaval Granite at the end of the Neoproterozoic, northwestern border of the Borborema Province

Brazilian Journal of Geology
The northwestern region of Borborema Province is represented by the Ceara Central and Northwest Ceara crustal blocks connected by an extensive transcurrent shear zone that represents the northern portion of the Transbrasiliano Lineament in a complex ...
Arthur Jeronimo Santana Aragão, Paulo Sergio de Sousa Gorayeb, Marco Antonio Galarza   +2 more
doaj   +1 more source

Multiscale Analysis of Bouguer Gravity Anomalies: Unveiling the Deep Structure of Eastern Himalayan Syntaxis Faults

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
The Eastern Himalayan Syntaxis (EHS), which is located at the southeastern edge of the Qinghai–Xizang Plateau, is a key region for understanding mountain‐building and subduction processes. Bouguer gravity anomalies derived from the Earth Gravitational Model 2008 free‐air anomaly data following topographic corrections, were analyzed.
Rui Zhang, Guiju Wu, Jian Wang, Yufei Xi, Hongtao Hao, Qinghong Long   +5 more
wiley   +1 more source

Deeply concealed half-graben at the SW margin of the East European Craton (SE Poland) — Evidence for Neoproterozoic rifting prior to the break-up of Rodinia

Journal of Palaeogeography, 2018
Baltica was one of continents formed as a result of Rodinia break-up 850–550 Ma. It was separated from Amazonia(?) by the Tornquist Ocean, the opening of which was preceded by Neoproterozoic extension in a network of continental rifts.
P. Krzywiec, P. Poprawa, M. Mikołajczak, S. Mazur, M. Malinowski   +4 more
doaj   +1 more source

Eocene Tectonic Change in the South Pacific Caused Exhumation of the Transantarctic Mountains in Northern Victoria Land, Antarctica

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Apatite fission‐track and (U‐Th)/He data indicate rapid exhumation of northern Victoria Land at 40–30 Ma, correlating with opening of Adare Trough at 43–28 Ma. Exhumation was greatest close to the Ross Sea, consistent with other regions of the Transantarctic Mountains.
Rupert Sutherland, Paul Fitzgerald, Nick Mortimer   +2 more
wiley   +1 more source

Depositional Interplay Between the Ancestral Rocky Mountains and Ouachita–Marathon–Sonora Orogenies: Insights From Provenance Records in the Late Palaeozoic Marfa Basin, West Texas, USA

Basin Research, Volume 38, Issue 2, March/April 2026.
Provenance records from the late Palaeozoic Marfa Basin in West Texas reveal the transition from the Ancestral Rocky Mountains to the Ouachita–Marathon–Sonora orogenies during the early Permian in SW Laurentia. ABSTRACT The Marfa Basin in West Texas is a late Palaeozoic synorogenic depocenter associated with regional deformation linked to the Ancestral
Sandra Juárez‐Zúñiga, Daniel F. Stockli, Benjamin Johnson, Timothy F. Lawton   +3 more
wiley   +1 more source

Neoproterozoic uranium mineralization in the Kangdian region of the eastern Tibetan Plateau, China

Geosystems and Geoenvironment
The Kangdian region is an important U metallogenic belt in southwestern China and has global significance for investigations of Neoproterozoic U metallogenesis.
Minghui Yin, Suheng Zhang, Zhengqi Xu, Hao Song, Youliang Chen, Jian Yao, Fenggang Wang   +6 more
doaj   +1 more source