Results 21 to 30 of about 23,060 (244)

Precambrian [PDF]

, 1993
Abstract This wide-ranging discussion of Precambrian rocks includes contributions from a diverse array of authors actively engaged in investigations of various aspects of U.S. Precambrian geology. Summary discussions by the editors of the five major chapters place these contributions in a logical regional framework.
openaire   +1 more source

Lithogeochemistry of fine-grained Vendian clastic rocks of the Nepa dome, Siberian Platform

Литосфера, 2016
It is conducted lithogeochemical investigation of Vendian fine-grained clastic sediments composed Talakh, Parshinsk (Nepa horizon) and Byuk suites (Tyre horizon) of some wells core material in Nepa dome of Nepa-Botuoba anteclise, Siberian Platform ...
L. N. Kotova, V. N. Podkovyrov, O. V. Graunov   +2 more
doaj   +2 more sources

Alternating coarse- and fine-grained sedimentation in Precambrian deep-water ramp (Apitina formation, SE of Brazil): tectonic and climate control or sea level variations?

, 2021
FAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOAre the depositional processes and architecture of Precambrian deep-water deposits the same of the Phanerozoic time?
Vidal, Alexandre Campane, Basilici, Giorgio   +1 more
core   +1 more source

MAIN STAGES OF CONTINENTAL CRUST FORMATION IN THE WESTERN ALDAN SHIELD: CONSTRAINTS FROM SM-ND ISOTOPE SYSTEMATICS OF CENOZOIC SANDS IN THE CHARA AND TOKKA BASINS

Геодинамика и тектонофизика, 2017
Previous geochronological and Sm-Nd isotopegeochemical studies have identified the main stages of the Precambrian continental crust formation in the central and eastern parts of the Aldan Shield [Kotov et al., 2006], while its western part (Chara-Olekma ...
A. B. Коtоv, T. M. Skovitina, V. P. Kovach, S. D. Velikoslavinsky, D. V. Lopatin, E. V. Sklyarov, E. V. Tolmacheva, O. V. Bobrovskaya   +7 more
doaj   +1 more source

THE PHENOMENON OF RAPID ACCUMULATION OF SEDIMENTS BELONGING TO THE UDOKAN GROUP AND THE FORMATION OF THE UNIQUE UDOKAN COPPER DEPOSIT (ALDAN SHIELD, SIBERIAN CRATON)

Геодинамика и тектонофизика, 2020
We analyzed new geological and geochronological data on sedimentation and metamorphism in the junction area of the Aldan and Stanovoy Superterranes comprising the southern flank of the Siberian craton.
D. P. Gladkochub, A. M. Mazukabzov, T. V. Donskaya   +2 more
doaj   +1 more source

Hot and cold deserts as eco‐evolutionary arenas for understanding plant resistance to multiple abiotic stressors

Biological Reviews, EarlyView.
ABSTRACT During their long evolutionary history, land plants have evolved a range of adaptations to different abiotic stressors. These help explain present‐day diversity and distribution patterns, as well as the potential resilience of natural and agricultural systems to a changing climate. Most previous research has focused on adaptation to individual
Marc Fradera‐Soler, Natasha Barbolini, Anže Žerdoner Čalasan, Marian Schubert, Catarina Rydin, Olwen M. Grace, Aelys M. Humphreys   +6 more
wiley   +1 more source

Major engineering breakthrough of Well XA‐1, the deepest ten‐thousand‐meter well in a global sedimentary basin

Deep Underground Science and Engineering, EarlyView.
Well XA‐1, completed at a true vertical depth of 11 156 m in the Shawan Sag of the Junggar Basin, is the deepest predominantly near‐vertical well drilled in a sedimentary basin. The figure shows the basin's tectonic framework and well location (a), a structural cross‐section spanning the Shawan Sag and adjacent uplifts (b), and the stratigraphic column
Fangkai Liu, Qingwen Tan, Sen Zhu, Guangyou Zhu   +3 more
wiley   +1 more source

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

Deep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan, Fangkai Liu, Sen Zhu, Guangyou Zhu, Haiping Huang   +4 more
wiley   +1 more source

2013 Precambrian Field Camp [PDF]

, 2013
University of Minnesota Duluth. Precambrian Research Center. (2013). 2013 Precambrian Field Camp.
University of Minnesota Duluth. Precambrian Research Center
core  

Modeling and monitoring injectivity evolution during cold CO2 injection with field evidence from aquistore carbon capture and storage operations

Deep Underground Science and Engineering, EarlyView.
This work integrates 5 years of field data from the Aquistore CCS project with a non‐isothermal THM modeling framework to explain how cold CO2 injection alters injectivity over time. The study shows that sustained cooling near the wellbore reduces effective stresses, promotes tensile micro‑cracking, and leads to semi‑reversible permeability enhancement
Alireza Rangriz Shokri, Stephen Talman, Erik Nickel, Rick Chalaturnyk   +3 more
wiley   +1 more source