J 2015

“Bottomsets” of the lava-fed delta of James Ross Island Volcanic Group, Ulu Peninsula, James Ross Island, Antarctica

NEHYBA, Slavomír and Daniel NÝVLT

Basic information

Original name

“Bottomsets” of the lava-fed delta of James Ross Island Volcanic Group, Ulu Peninsula, James Ross Island, Antarctica

Name in Czech

“Bottomsets” lavových delt z James Ross Island Volcanic Group, Ulu Peninsula, James Ross Island, Antarctica

Authors

NEHYBA, Slavomír (203 Czech Republic, guarantor, belonging to the institution) and Daniel NÝVLT (203 Czech Republic, belonging to the institution)

Edition

Polish Polar Research, Warszava, Polish Academy of Science, 2015, 0138-0338

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10507 Volcanology

Country of publisher

Poland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.182

RIV identification code

RIV/00216224:14310/15:00082426

Organization unit

Faculty of Science

UT WoS

000351852600001

Keywords (in Czech)

Antarctica-James Ross Island-lavová delta- lithofacie- Pliocen.

Keywords in English

Antarctica- James Ross Island- lava-fed delta- lithofacies- Pliocene.

Tags

Změněno: 13/3/2018 12:46, prof. RNDr. Slavomír Nehyba, Dr.

Abstract

V originále

Sedimentological study of the three geographically separated outcrops of bottomsets of a single lava-fed delta (Pliocene) in the James Ross Island (Antarctica) allows recognition of six lithofacies.Deposits of traction currents, deposits of volcaniclastic debris flows and products of such flows transformations (both low- and high-density turbidity currents) and glacigenic deposits (subaqueous debris flows and traction/turbidity currents) were all recognised. Existence of submarine proglacial environment formed prior to formation of volcaniclastic deposits partly covering the subaqueous slopes of volcano is supposed. The principal role of mass flow processes was recognised and explained by relative steep slopes of the lava-fed delta. The distribution of lithofacies significantly differs in the individual outcrops. These variations in sedimentary succession and also in thickness of volcaniclastic deposits of “bottomsets” of the single lava fed delta suggest principal role of local conditions and paleogeography for development and preservation of this part of delta depositional system. Moreover proximal and distal setting can be followed and direct vs. more distant relation to overriding lava-fed delta supposed. The sedimentary succession terminated by foresets of hyaloclastite breccia.

Links

EE2.3.30.0037, research and development project
Name: Zaměstnáním nejlepších mladých vědců k rozvoji mezinárodní spolupráce