Results 71 to 80 of about 829 (171)

3‐D Subsurface Geophysical Modeling of the Charity Shoal Structure: A Probable Late Proterozoic‐Early Paleozoic Simple Impact Structure in Eastern Lake Ontario

Earth and Space Science
The Charity Shoal structure is a circular, ∼1.2‐km‐diameter, bedrock‐rimmed shoal in eastern Lake Ontario with a ∼20‐m‐deep central basin. The structure has been proposed as a possible Middle Ordovician impact crater or volcanic intrusion.
Mary H. Armour, Joseph I. Boyce, Phillip Suttak, Doug Hrvoic   +3 more
doaj   +1 more source

Tonian age marker acritarch taxa Hermann from the Mesoproterozoic Chhattisgarh Supergroup, Baradwar sub-basin, central India and its stratigraphic significance

Journal of the Palaeontological Society of India
Compression-preserved acid-resistant organic-walled microfossils (OWM) entombed in fine-grained siliciclastic rocks provide an essential tool for biostratigraphic correlation, especially when alternative methods are scarce.
VEERU KANT SINGH, MUKUND SHARMA
doaj   +1 more source

Distribution, Microfabric, and Geochemical Characteristics of Siliceous Rocks in Central Orogenic Belt, China: Implications for a Hydrothermal Sedimentation Model

The Scientific World Journal, 2014
Marine siliceous rocks are widely distributed in the central orogenic belt (COB) of China and have a close connection to the geological evolution and metallogenesis. They display periodic distributions from Mesoproterozoic to Jurassic with positive peaks
Hongzhong Li, Mingguo Zhai, Lianchang Zhang, Le Gao, Zhijun Yang, Yongzhang Zhou, Junguo He, Jin Liang, Liuyu Zhou, Panagiotis Ch. Voudouris   +9 more
doaj   +1 more source

Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico [PDF]

Geofísica Internacional, 2000
Eighty-five detrital zircon grains from Mesoproterozoic and/or Neoproterozoic to Middle Cambrian sedimentary strata in northwest Sonora, Mexico, have been analyzed to determine source terranes and provide limiting depositional ages of the units.
George E. Gehrels, John H. Stewart, Essa L. Gross   +2 more
doaj  

High Heat Producing Mesoproterozoic Granitoids and Their Impact on the Geothermal Field in Lithuania, Baltic Basin

Applied Sciences
The Palaeoproterozoic crystalline basement is overlain by the Baltic Basin. Lithuania is situated in the shallow eastern periphery and grades into the deep part of the basin, which comprises a number oil fields; the thickness of the sedimentary cover ...
Saulius Šliaupa, Gediminas Motuza
doaj   +1 more source

Breathing life into the boring billion: Direct constraints from 1.4 Ga fluid inclusions reveal a fair climate and oxygenated atmosphere. [PDF]

Proc Natl Acad Sci U S A
Park JG, Hudgins MN, Fralick P, Shelley JT, Schaller MF.   +4 more
europepmc   +1 more source

The Fe Oxidation and Organic Decomposition at Mesoproterozoic [PDF]

Goldschmidt Abstracts, 2020
Xiaomei Wang, Donald E Canfield, Shuichang Zhang, Huajian Wang   +3 more
openaire   +1 more source

Tectonism rather than "snowball Earth" glaciation is responsible for the Great Unconformity. [PDF]

Proc Natl Acad Sci U S A
Zhan RR, Duan L, Zattin M, Christie-Blick N, Wan B, Wei RH, Yang Z, Wang J, Gou L, Olivetti V, Chen KY, Zhang X.   +11 more
europepmc   +1 more source

Oxygen isotope composition of Mesoproterozoic (~1360 Ma) seawater constrained by clumped isotopes of North China limestones. [PDF]

Sci Adv
Li P, Hao F, He S, Chai H, Jiao Y, Gao Y, Zou H.   +6 more
europepmc   +1 more source

Mesoproterozoic surface oxygenation accompanied major sedimentary manganese deposition at 1.4 and 1.1 Ga. [PDF]

Geobiology, 2023
Spinks SC, Sperling EA, Thorne RL, LaFountain F, White AJR, Armstrong J, Woltering M, Tyler IM.   +7 more
europepmc   +1 more source