Results 81 to 90 of about 50,959 (268)
Mechanisms of near‐normal sea water dolomitisation: Mesohaline‐reflux or syn‐depositional?
The Depositional Record, Volume 12, Issue 1, February 2026.This study investigates the dolomitisation of the Eocene Dammam Formation on the Arabian Plate using petrographic, mineralogical, geochemical and isotopic analyses. The findings reveal two distinct dolomite types, formed primarily through normal‐to‐mesohaline sea water dolomitisation, challenging previous models such as sabkha‐meteoric mixing.
Misbahu Abdullahi +3 more
wiley +1 more source
Acta Crystallographica Section E, 2014 Single-crystals of the title compound, nonapotassium triyttrium dodecasilicate difluoride, were obtained from flux synthesis experiments in the system SiO2—Y2O3—KF.
Volker Kahlenberg, Tanja Manninger
doaj +1 more source
Stratigraphy of the Hawai'i Scientific Drilling Project core (HSDP2): Anatomy of a Hawaiian shield volcano [PDF]
, 2007 The Hawai'i Scientific Drilling Project (HSDP2) successfully drilled ∼3.1 km into the island of Hawai'i. Drilling started on Mauna Loa volcano, drilling 247 m of subaerial lavas before encountering 832 m of subaerial Mauna Kea lavas, followed by 2019 m ...
Baker, Michael +3 more
core +1 more source
Carbonate sedimentology: An evolved discipline
The Depositional Record, Volume 12, Issue 1, February 2026.Abstract Although admired and examined since antiquity, carbonate sediment and rock research really began with Charles Darwin who, during a discovery phase, studied, documented and interpreted their nature in the mid‐19th century. The modern discipline, however, really began after World War II and evolved in two distinct phases.
Noel P. James, Peir K. Pufahl
wiley +1 more source
Metallogeny of the marginal sea lithosphere (Northeast Russia)
Литосфера, 2015 Metallogenic model of the margin sea lithosphere is a complex combination of rejuvenated mineralization of the Precambrian basement terrains, of different types of sulfidized zones Verkhoyansk (Pz-J) sedimentary formations and the post-magmatic ...
A. A. Sidorov, A. V. Volkov
doaj +2 more sources
Записки Горного институтаA unique Mn-, Cd-bearing sphalerite from quartz-calcite veins in the coal-bearing series (Visean C1v) marine sediments in a 50 km segment of the middle course of the Silova-Yakha River in the Arctic zone of the European part of Russia (Pai-Khoi Ridge ...
Aleksandr B. Makeyev +4 more
doaj
Petrographical Analysis of Warthian Fuvioglacial Gravels as a Tool to Trace the Source Area – A Case Study From Central Poland [PDF]
, 2014 The petrographical features of the medium- and coarse-grained gravels (4-10 mm and 20-60 mm, respectively) of weathered and fresh (unweathered) deposits indicate, in combination with so-called indicator and statistical erratics, that two glacial lobes ...
Górska-Zabielska, Maria +1 more
core +2 more sources
The Depositional Record, Volume 12, Issue 1, February 2026.This study characterises carbonate mineral precipitation mechanisms and their paleoenvironmental implications in a semi‐arid, saline playa lake system. SEM image with EDS spectra shows microcrystalline, spherical shaped dolomite crystals from Laguna Fuente de Piedra composed of nanocrystals with bacterial voids and EPS.
Zeina Naim +5 more
wiley +1 more source
Russian Journal of Earth SciencesPlacer deposits had (and for a number of components still have) an important role in providing strategic types of mineral resource base for both Russia and the world as a whole.
Bortnikov N. S. +5 more
doaj +1 more source
GOLD-POLYMETALLIC MINERALIZATION OF THE RIDDER-SOKOLNOYE DEPOSIT IN THE RUDNY ALTAI (EASTERN KAZAKHSTAN) [PDF]
Минералогия, 2018 New geochemical data on distribution of gold mineralization in the ore lode sections of the Ridder-Sokolnoye deposit, the largest in Rudny Altai, confirm the crossing style of gold-quartz veins and gold-bearing stockwork relative to the zonal bodies of ...
G.D.Ganzhenko +2 more
doaj