LITHOLOGICAL AND PALEONTOLOGICAL CHARACTERISTICS SANTON-MAASTRICHTIAN SEDIMENTS OF THE GUYOTS OF THE MAGELLAN MOUNTAINS (PACIFIC OCEAN)
Journal Title: Geologia i poleznye iskopaemye mirovogo okeana - Year 2018, Vol 14, Issue 4
Abstract
Carried out to description of typical rocks is in the base of the sedimentary cover on the Magellan seamountains. The upper part of the volcanic basement of guyots is overlapped by the Aptian shallow reef deposits. They are represented by terrigenous (beach) and organic-chemical (coral, shelland-detritus and oolitic) carbonate rocks. These deposits are almost continuous ring encircles the Western part of the Fedorov Guyot, Ilyicheva, satellite buildings of the Alba and Pallada Guyots from the edge of the summit plateau to the depths of 2500—3000 m. Below, they are replaced by planktonic (nanoforaminifers) sediments and breccias. The appearance of pelagic limestone associated with higher oceanic level in Late Campanian transgression. There are squares of the exposure of reef and planktonogenic rocks to 200 km2 in the study guyots.
Authors and Affiliations
Sergei Pletnev
Keywords
Related Articles
- EP ID EP545570
- DOI 10.15407/gpimo2018.04.020
- Views 73
- Downloads 0
THE STRUCTURE OF NORTHERN KURIL-KAMCHATKA TRENCH AND ADJACENT AREAS
The structure of northern Kuril-Kamchatka trench and adjacent areas are analysed by sounding and SCP data. It is showed, that Kuril-Kamchatka and Aleutian trenches are young, imposed morphostructures with elements of vir...
ON THE DISTRIBUTION OF ORGANIC COMPOUNDS OF ANTHROPOGENIC ORIGIN IN THE GEOLOGICAL AND ECOLOGICAL SYSTEMS OF BOTTOM SEDIMENTS OF SEPARATE SECTIONS OF THE BLACK SEA BASIN
The article is devoted to the problem of distribution of persistent organic pollutants in geological and ecological systems of bottom sediments of the sections of the continental slope of the Black Sea basin. In particul...
Mud deposits of methane gashydrates in the Black Sea
The article discusses the formation of a special mud-volcanic type of gas hydrate accumulations in the deep-water part of the Black Sea. The main conclusions are based on the results of geological and geophysical studies...
MOBILE DIRECT-PROSPECTING TECHNOLOGIES: SOME RESULTS OF THEIR APPLICATION FOR OIL AND GAS SEARCHING WITHIN OFFSHORE
The results of mobile and direct-prospecting methods using for the prospects of oil and gas potential estimating of a local site in the land-sea transition zone, as well as search blocks within offshore in different regi...
Development of the deepest karst systems and submarine discharge of the Arabika massif (Western Caucasus): the role of the late miocene regression of Eastern Paratethys
The large mountainous massif Arabika in the Western Caucasus borders directly with the sea coast. Karstified limestones that comprise the massif submerge below sea level toward the south-west. Numerous deep caves have be...