Results 121 to 130 of about 64,380 (320)

Bedrock geology map, Jo Daviess County, Illinois [PDF]

open access: yes, 2000
Ope
McGarry, Christopher S.
core  

Upper Silurian Corals [PDF]

open access: yesThe Geologist
Coral-Hunting in the debris of a Wenlock-shale quarry ranks high— to my thinking—amongst the pleasures of geology. And, indeed, has no insignificant place among its wonders. For to any one not conversant with zoophytic life, it is hard to believe that the rugged corals that lie strewn about the quarry, once held sensitive masses of life—that from every
openaire   +2 more sources

Murchison's silurian system [PDF]

open access: yesJournal of the Franklin Institute
n ...
openaire   +2 more sources

Difference Analysis of Organic Matter Enrichment Mechanisms in Upper Ordovician-Lower Silurian Shale from the Yangtze Region of Southern China and Its Geological Significance in Shale Gas Exploration

open access: yesGeofluids, 2019
The upper Ordovician-lower Silurian shale has always been the main target of marine shale gas exploration in southern China. However, the shale gas content varies greatly across different regions.
Ming Wen   +14 more
doaj   +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,
Burke C.D.   +42 more
core   +1 more source

Paleomagnetic dating of rocks of the Bolshesyrsky magmatic area of the Minusinsky basin

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
Paleomagnetic dating of the Bolshesyrsky igneous area, a thick intraplate igneous complex of Khakassia, was carried out. The complex has not been dated due to the peculiarities of the stratigraphy and the lack of suitable rocks for applying the methods ...
D.V. Kovalenko, M.V. Buzina
doaj   +1 more source

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