Results 71 to 80 of about 4,839,080 (222)

Conditions and timing for the precipitation of early marine diagenetic dolomite in the Triassic Dolomia Principale (northern Italy)

open access: yesSedimentology, EarlyView.
ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot   +8 more
wiley   +1 more source

Early diversification of seeds and seed-like structures

open access: yesCarnets de Géologie, 2005
The seed habit is one of the most important evolutionary acquisition in plant evolution. It allowed colonisation of new ecological niches, leading to a level of diversification never observed before.
Prestianni Cyrille
doaj  

Application of Lithological and Geochemical Approach to Determine the Genesis of Dolomite Cavernous Reservoir (Lower Devonian, Gydan Peninsula)

open access: yesGeoresursy
To evaluate the origin of cavernous hydrocarbon reservoir in the Lower Devonian dolostones (Western Taimyr, eastern coast of the Gydan Peninsula), the host rocks and the infilling carbonate minerals were studied using an integrated approach, including ...
К. Yu. Vasileva   +9 more
doaj   +1 more source

Gas exchange and pulmonary stress variations during SCUBA and breath‐hold diving in open seawater

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Healthy, trained divers were studied before, during and after diving in open seawater with different techniques. SCUBA divers (diving to 15 or 40 m with air; cycling at depth) and breath‐hold divers (BHDs; sled‐assisted dives to 15, 25 or 40 m) underwent underwater and surface arterial blood gas (ABG) sampling.
Matteo Paganini   +11 more
wiley   +1 more source

NEW DATA ON MIDDLE DEVONIAN CONODONTS FROM SW-SARDINIA:THE SU NUARGI II SECTION REVISITED

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2013
The conodont collection from the nodular limestone beds of the Su Nuargi II outcrop near Domusnovas in SW-Sardinia (Italy) is restudied for the purpose of reassessing the outcrop and updating the conodont collection to the most recent taxonomy. Su Nuargi
SOFIE GOUWY
doaj   +1 more source

Global correlation using magnetic susceptibility data from Lower Devonian rocks

open access: yes, 2001
Magnetic susceptibility data from marine rocks can be used for global correlation because of synchronous variations in global erosion. We show here correlations between magnetic susceptibility data from two Lower Devonian; biostratigraphically well ...
Kovas, Edward J.   +6 more
core   +1 more source

Devonian deposits – prospective direction of searching for oil and gas in the subsalt complex of the Сaspian basin

open access: yesGeoresursy, 2017
The regional features of the structure and distribution of the Devonian deposits in the subsalt Paleozoic complex of the Caspian basin are considered taking into account the new drilling data and the results of the interpretation of the aeromagnetic ...
D.K. Azhgaliyev
doaj   +1 more source

DEVONIAN CONODONTS FROM SPITI HIMALAYA, INDIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2023
The present paper describes the lower Upper Devonian conodont fauna from the upper units of Muth Formation, Spiti Valley, Himalaya.
A. D. AHLUWALIA   +3 more
doaj  

Shallow-marine testate amoebae with internal structures from the Lower Devonian of China. [PDF]

open access: yesiScience, 2023
Wang K   +7 more
europepmc   +1 more source

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