Results 131 to 140 of about 16,764 (247)

Confronting Episodic vs. Continuous Heat Sources in Long‐Lived Hot Orogens: Insights From Petrochronological Studies in the Nova Venecia Complex, Araçuaí Orogen (SE Brazil)

open access: yesJournal of Metamorphic Geology, Volume 43, Issue 9, Page 863-890, December 2025.
ABSTRACT Orogenic belts that sustain elevated temperatures at intermediate crustal depths for tens of millions of years are known as hot orogens. The evolution of these hot orogens is largely influenced by thermal maturation, primarily driven by the distribution of heat‐producing elements (HPEs), such as K, Th and U in the overthickened crust.
Lucas R. Schiavetti   +6 more
wiley   +1 more source

A composite C-isotope profile for the Neoproterozoic Dalradian Supergroup of Scotland and Ireland [PDF]

open access: yes, 2009
The Neoproterozoic Dalradian Supergroup is a dominantly siliciclastic metasedimentary succession in the Caledonian orogenic belt of Scotland and Ireland.
Fallick, A.E.   +3 more
core   +1 more source

Sedimentary provenance of siliciclastic rocks from the Lalla Mouchaa Calcschists Formation (Coastal Block, Western Rehamna): Evidence of denudation of ca. 2 Ga basement in the Moroccan Meseta. [PDF]

open access: yes, 2018
Paleoproterozoic basement rocks (ca. 2Ga) are scarce along the European and North African Paleozoic mountain chains (Fig.1a). In Morocco, ca. 2.2-2Ga granitic rocks (Gasquet et al., 2008; Kouyaté et al., 2013) have been exclusively reported in the ...
El Attari, A.   +8 more
core  

The Geology as an indispensable tool for optimizing the exploration of dimension Stones [PDF]

open access: yes, 2012
Like any Geological Resource, the Dimension Stones can only be exploited where they occur. How they occur is a reflection of geological history that presided over its formation.
Lopes, Luís
core  

A Stratified Redox Model for the Ediacaran Ocean [PDF]

open access: yes, 2010
The Ediacaran Period (635 to 542 million years ago) was a time of fundamental environmental and evolutionary change, culminating in the first appearance of macroscopic animals.
Chu, Xuelei   +5 more
core   +1 more source

Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals

open access: yesScience, 2018
Confirming the identity of early animals The first complex organisms emerged during the Ediacaran period, around 600 million years ago. The taxonomic affiliation of many of these organisms has been difficult to discern.
I. Bobrovskiy   +5 more
semanticscholar   +1 more source

Indentor-escape, delamination and orogenic collapse of the ca. 600-500 Ma East African/Antarctic Orogen in Mozambique and Dronning Maud Land (East Antarctica) [PDF]

open access: yes, 2010
The East African/Antarctic Orogen (EAAO) is one of the largest orogenic belts on the planet, resulting from the collision of various parts of East and West- Protogondwana between ca. 600 and 550 Ma.
Bingen, Bernard   +5 more
core   +1 more source

Potential sources of Ediacaran strata of Iberia: a review [PDF]

open access: yes, 2014
Advances in stratigraphy, geochemistry and U-Pb detrital zircon geochronology from Ediacaran strata of Iberia allow for the improved characterisation of crustal growth in the North Gondwana active margin.
Pereira, M. francisco
core   +1 more source

Of time and taphonomy: preservation in the Ediacaran [PDF]

open access: yes, 2014
The late Neoproterozoic witnessed a revolution in the history of life: the transition from a microbial world to the one we know today. The enigmatic organisms of the Ediacaran hold the key to understanding the early evolution of metazoans and their ...
Kenchington, Charlotte G   +1 more
core   +2 more sources

New high‐resolution age data from the Ediacaran–Cambrian boundary indicate rapid, ecologically driven onset of the Cambrian explosion

open access: yesTerra Nova, 2018
The replacement of the late Precambrian Ediacaran biota by morphologically disparate animals at the beginning of the Phanerozoic was a key event in the history of life on Earth, the mechanisms and the time‐scales of which are not entirely understood.
U. Linnemann   +14 more
semanticscholar   +1 more source

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