Results 21 to 30 of about 671 (189)

Sketches of stromatoporoid assemblages visible on weathered rock surfaces.

open access: yes, 2022
A–allobiostrome fragment representing a typical clast-supported stromatoporoid accumulation dominated by high-domical and bulbous forms with smooth surfaces and enveloping latilaminae arrangements, and with initial surfaces dominated by initial ...
Piotr Łuczyński (12557756)
core   +1 more source

Enhanced Continental Weathering as a Trigger for the End‐Devonian Hangenberg Crisis

open access: yesGeophysical Research Letters, Volume 50, Issue 11, 16 June 2023., 2023
Abstract The Hangenberg Crisis coincided with a large decline of biodiversity and widespread anoxia in the end‐Devonian ocean. Previous research attributed marine anoxia to the spread of deeply‐rooted plants and/or increased volcanism on the continents, but crucial links have not been thoroughly explored. Herein, we propose enhanced weathering as a key
Wenkun Qie   +10 more
wiley   +1 more source

Inside a sediment‐stressed Middle Devonian carpet reef: Cave exposes details of three‐dimensional facies architecture and palaeoecology

open access: yesSedimentology, Volume 70, Issue 4, Page 1251-1280, June 2023., 2023
ABSTRACT During the Middle Devonian, reef growth reached an acme, and corals and stromatoporoids colonized depositional niches commonly considered unfavourable for reefal organisms. This paper documents the detailed facies architecture and palaeoecology of a stratigraphically thin (ca 12 m, ‘carpet reef’), lower Givetian reefal body exposed along the ...
Tanja Unger   +6 more
wiley   +1 more source

Palaeobiology, ecology, and distribution of stromatoporoid faunas in biostromes of the mid-Ludlow of Gotland [PDF]

open access: yes, 2008
Six well exposed mid−Ludlow stromatoporoid−dominated reef biostromes in four localities from the Hemse Group in southeastern Gotland, Sweden comprise a stromatoporoid assemblage dominated by four species; Clathrodictyon mohicanum, “Stromatopora” bekkeri,
Kershaw, S, Sandström, S
core   +1 more source

Allogenic succession in Late Ordovician reefs from southeast China: a response to the Cathaysian orogeny [PDF]

open access: yesEstonian Journal of Earth Sciences, 2015
Several Late Ordovician (late Katian) reef complexes are known from the border area of Jiangxi and Zhejiang provinces in southeast China. We studied two coral–stromatoporoid reefs exposed in the Xiazhen Formation at Zhuzhai (Yushan, Jiangxi).
Qijian Li, Yue Li, Wolfgang Kiessling
doaj   +1 more source

Bryozoan‐rich stromatolites (bryostromatolites) from the Silurian of Gotland and their relation to climate‐related perturbations of the global carbon cycle

open access: yesSedimentology, Volume 69, Issue 1, Page 162-198, January 2022., 2022
ABSTRACT Bryozoan–stromatolite associations (bryostromatolites) formed conspicuous reef structures throughout the Sheinwoodian (Wenlock) to Ludfordian (Ludlow) stratigraphy on Gotland but have not been described so far. They are mainly composed of encrusting bryozoans forming a complex intergrowth with porostromate and spongiostromate microbes and are ...
Anna Lene Claussen   +3 more
wiley   +1 more source

Basic stromatoporoid shapes and morphometric features (after [61]).

open access: yes, 2022
A–Basic morphotypes: laminar (L), low domical (LD), high domical (HD), extended domical (ED), highly extended domical (HED), low bulbous (LB) and high bulbous (HB); B ‒ Basic macroscopic morphometric features; C ‒ Distinction between the stromatoporoid ...
Piotr Łuczyński (12557756)
core   +1 more source

The appearance of Rosenella (stromatoporoid sponge) in Baltica: new species from the Pirgu Stage (Katian, Upper Ordovician) of Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences
The Katian Age, part of the Late Ordovician Epoch, was a period of significant stromatoporoid diversification. However, their fossil record is often less continuous, hindering our understanding of their diversity and diversification.
Juwan Jeon, Ursula Toom
doaj   +1 more source

First report of an aulaceratid stromatoporoid from the Ordovician of Baltica [PDF]

open access: yesEstonian Journal of Earth Sciences
The aulaceratid stromatoporoids first appeared in the late Middle Ordovician and had achieved a worldwide distribution in tropical to subtropical shallow-marine environments by the Late Ordovician; however, their presence in Baltica has not been ...
Juwan Jeon, Ursula Toom
doaj   +1 more source

Revisiting the Cupidito unit (Cupido Formation) along peritidal carbonates from northeastern Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2020
Depositional episodes are readily identified along representative localities of the Lower Cretaceous Cupido platform in northeastern Mexico. The basal part of the Cupido Formation exhibits a progradational reef platform that, at the upper limit, is ...
Felipe de Jesús Torres de la Cruz   +3 more
doaj   +1 more source

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