Results 121 to 130 of about 7,350 (205)

Coupled authigenic Mg silicate and carbonate precipitation in saline lakes of the Salar de Atacama, Northern Chile

The Depositional Record, Volume 12, Issue 1, February 2026.
Sediments, unlithified and lithified microbial mats in the Salar de Atacama, are formed by similar pathways involving coupled precipitation of authigenic Mg silicate and calcium carbonate. Differences in products reflect differences in the initial distribution of organic biomass.
Erica P. Suosaari, Christophe Dupraz, Amanda M. Oehlert, Ioan Lascu, Brooke E. Vitek, Alan M. Piggot, Alvaro T. Palma, R. Pamela Reid   +7 more
wiley   +1 more source

Diagenesis and pore evolution of tight reservoirs in glutenite section of Bachu Formation, Tahe Oilfield

Shiyou shiyan dizhi
The tight reservoirs in the glutenite section of the Carboniferous Bachu Formation in the Tahe Oilfield represent an important future exploration target.
Xindong DIAO, Wenping LI, Dong JIANG, Fangfang ZHOU, Zhipeng HUO, Jianbo GAO, Ningliang SUN, Zhifeng CAO, Jianan WANG, Yanan WANG, Zhiwei CHEN, Changyu DONG   +11 more
doaj   +1 more source

Reconstrucción del patrón alimenticio de dos poblaciones prehistóricas de la Meseta Norte [PDF]

Sin ...
Fabián, Francisco Javier, López-bueis, Inmaculada, Robledo, Beatriz, Trancho, Gonzalo J.   +3 more
core   +1 more source

Illitización hidrotermal de esmectita en el sitema (NH4)O-Al2O3-SiO2-H2O: influencia de la presencia de amonio [PDF]

, 2018
Durante la diagénesis se producen reacciones que afectan a filosilicatos y a la materia orgánica, ligadas a la generación de hidrocarburos, esto lleva a la fijación de NH4 en las illitas y a la disolución por ácidos orgánicos.
Bentabol-Manzanares, Maria Jose, Hernández Laguna, Alfonso, Huertas, F.Javier, Lamarca-Irisarri, Daniel   +3 more
core  

Organoclay interaction response to sedimentary environment and sources in Paleogene shales from the Nanpu Sag: Insights for organic matter accumulation mechanism

The Depositional Record, Volume 12, Issue 1, February 2026.
The deep paleo‐lake, characterised by low energy and moderate salinity, facilitated the input of fine‐grained minerals and the development of aquatic organic matter. Under the combined influence of the sedimentary environment and material source, mineral‐bound organic matter was formed, which played a crucial role in the enrichment of organic matter ...
Rusi Zuo, Jingong Cai, Wei Duan, Xiang Zeng, Jinyi He, Chuan Cai, Qianyou Wang   +6 more
wiley   +1 more source

Development and significance of tectonic foliations in the Hercynian Belt of NW Spain [PDF]

, 1990
[Resumen] En este trabajo se presenta un modelo de distribución y desarrollo de foliaciones en rocas pelíticas y samíticas dentro de un orógeno: el Macizo Herciniano del NW d e España.
Aller, J., Bastida, Fernando, Pulgar, Javier A.   +2 more
core   +1 more source

A critical role of heterotrophic bacteria in early diagenesis of carbonates through exopolymer degradation and calcium release

The Depositional Record, Volume 12, Issue 1, February 2026.
Exopolymeric substances (EPS) produced in the photic zone and surface sediments sequester calcium. Below the sediment surface, heterotrophic bacteria degrade EPS, releasing calcium resulting in carbonate precipitation. This process, which continues for millennia deep in the core, is an important sink for atmospheric carbon dioxide.
Pieter T. Visscher, Pierre Boussagol, Raphael Bourillot, Christophe Dupraz, Olivier Braissant, Alan W. Decho, Brendan P. Burns, Richard Allen White III, Paxton Tomko, Emmanuelle Vennin   +9 more
wiley   +1 more source

Precipitation mechanism of anhydrite cement in lacustrine tight sandstone: Implications for fluid activity, mass transfer and pore origin of open diagenetic system in tight sandstone

The Depositional Record, Volume 12, Issue 1, February 2026.
This paper discusses a new model concerning the precipitation mechanismand significance of anhydrite cement in tight sandstone. Anhydrite cement ismainly formed by the dissolution and reprecipitation of early‐diageneticcalcite cements, feldspars and volcanic rock fragments at the mesodiageneticstage.
Long Luo, Meng Li, Shanzheng Tan, Xianfeng Tan, Xin Yu, Jon Gluyas, Jia Wang, Wei Jiang, Xuejiao Qu, Kangjun Wu, Yiting Gu   +10 more
wiley   +1 more source

Hydrothermal dolomitisation of a deep‐water bioherm isolated in a non‐dolomitised intraplatform basin within the Norian Dolomia Principale (Southern Alps, northern Italy)

The Depositional Record, Volume 12, Issue 1, February 2026.
We propose that one of the largest known bioconstructions (the Monte Zenone bioherm) in the Southern Alps, northern Italy, and its growth on a tilted and drowned platform block of the Norian Dolomia Principale was controlled by hydrothermal dolomitisation from fault‐controlled fluids during the Late Triassic–Early Jurassic rifting phase. Dolomitisation
Martin Müller, Stefano M. Bernasconi, Vincenzo Picotti, Jordon D. Hemingway   +3 more
wiley   +1 more source

Domed‐rim microbial polygons and their preservation potential

The Depositional Record, Volume 12, Issue 1, February 2026.
Microbially induced sedimentary structures (MISS) derive through interactions between minerals and microorganisms. We define a domed‐rim MISS, morphologically distinct from abiotic mud cracks and demonstrate its potential for long‐term preservation. These structures represent promising biosignatures in ancient environments on Earth and potentially Mars.
Franziska R. Blattmann, Timothy I. Eglinton, Negar Haghipour, Simon E. Rouwendaal, Stefano M. Bernasconi, John M. Rivers, Maria Dittrich, Zulfa Al Disi, Kenneth H. Williford, Fadhil Sadooni, Hamad A. Al‐Saad Al‐Kuwari, Tomaso R. R. Bontognali   +11 more
wiley   +1 more source