A revised lithostratigraphic nomenclature for the Palaeogene Faroe Islands Basalt Group, NE Atlantic Ocean

Simon R. Passey, David William Jolley

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65 Citations (Scopus)

Abstract

The Palaeogene volcanic succession of the Faroe Islands in the NE Atlantic Ocean is formalised using a purely lithostratigraphic approach and following international guidelines. The Faroe Islands Basalt Group (FIBG) has a gross stratigraphic thickness of similar to 6.6 km. dominated by subaerial basalt lava flows, and is subdivided into seven formations. The Lopra Formation forms the basal similar to 1.1 km of the Lopra-1/1A borehole, dominated by hyaloclastites, volcaniclastic sandstones and invasive basaltic lavas/sills. It is overlain by the similar to 3.25 km-thick Formation, dominated by laterally extensive basalt sheet lobes separated by minor volcaniclastic lithologies. The Beinisvoro Formation is overlain by the <15 m-thick.. inter-eruption, coal-bearing facies of the Prestfjall Formation and the <50 m-thick, syn-eruption, pyroclastic and sedimentary facies of the Hvannhagi Formation. Lava flow volcanic activity resumed with the <1.4 km-thick Malinstindur Formation, dominated by thinly bedded compound basalt lava flows. The top of this formation is marked by a regional disconformity surface, overlain by sandstone and conglomerate deposits of the maximum 30 in-thick Sneis Formation, a newly recognised stratigraphic unit. The final phase of volcanism recorded on the Faroe Islands consists of the >900 in-thick Enni Formation composed of a mixture of basalt sheet lobes and compound flows with abundant volcaniclastic units, e.g. the Argir Beds, that may require a further Subdivision at this stratigraphic level. The new lithostratigraphy allows for more refined biostratigraphical and sequence stratigraphic correlations and prepares for a revised geological map of the Faroe Islands.

Original languageEnglish
Pages (from-to)127-158
Number of pages32
JournalEarth and Environmental Science Transactions of the Royal Society of Edinburgh
Volume99
Issue number3-4
DOIs
Publication statusPublished - Dec 2008

Keywords

  • Basalt
  • facies architecture
  • stratigraphic marker units
  • subaerial lava flows
  • volcaniclastic rocks
  • beneath Faeroe Islands
  • Igneous Province
  • East Greenland
  • Iceland plume
  • lava-field
  • sediments
  • Scotland
  • constraints
  • evolution
  • eruption

Cite this

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title = "A revised lithostratigraphic nomenclature for the Palaeogene Faroe Islands Basalt Group, NE Atlantic Ocean",
abstract = "The Palaeogene volcanic succession of the Faroe Islands in the NE Atlantic Ocean is formalised using a purely lithostratigraphic approach and following international guidelines. The Faroe Islands Basalt Group (FIBG) has a gross stratigraphic thickness of similar to 6.6 km. dominated by subaerial basalt lava flows, and is subdivided into seven formations. The Lopra Formation forms the basal similar to 1.1 km of the Lopra-1/1A borehole, dominated by hyaloclastites, volcaniclastic sandstones and invasive basaltic lavas/sills. It is overlain by the similar to 3.25 km-thick Formation, dominated by laterally extensive basalt sheet lobes separated by minor volcaniclastic lithologies. The Beinisvoro Formation is overlain by the <15 m-thick.. inter-eruption, coal-bearing facies of the Prestfjall Formation and the <50 m-thick, syn-eruption, pyroclastic and sedimentary facies of the Hvannhagi Formation. Lava flow volcanic activity resumed with the <1.4 km-thick Malinstindur Formation, dominated by thinly bedded compound basalt lava flows. The top of this formation is marked by a regional disconformity surface, overlain by sandstone and conglomerate deposits of the maximum 30 in-thick Sneis Formation, a newly recognised stratigraphic unit. The final phase of volcanism recorded on the Faroe Islands consists of the >900 in-thick Enni Formation composed of a mixture of basalt sheet lobes and compound flows with abundant volcaniclastic units, e.g. the Argir Beds, that may require a further Subdivision at this stratigraphic level. The new lithostratigraphy allows for more refined biostratigraphical and sequence stratigraphic correlations and prepares for a revised geological map of the Faroe Islands.",
keywords = "Basalt, facies architecture, stratigraphic marker units, subaerial lava flows, volcaniclastic rocks, beneath Faeroe Islands, Igneous Province, East Greenland, Iceland plume, lava-field, sediments, Scotland, constraints, evolution , eruption",
author = "Passey, {Simon R.} and Jolley, {David William}",
year = "2008",
month = "12",
doi = "10.1017/S1755691009008044",
language = "English",
volume = "99",
pages = "127--158",
journal = "Earth and Environmental Science Transactions of the Royal Society of Edinburgh",
issn = "1755-6910",
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TY - JOUR

T1 - A revised lithostratigraphic nomenclature for the Palaeogene Faroe Islands Basalt Group, NE Atlantic Ocean

AU - Passey, Simon R.

AU - Jolley, David William

PY - 2008/12

Y1 - 2008/12

N2 - The Palaeogene volcanic succession of the Faroe Islands in the NE Atlantic Ocean is formalised using a purely lithostratigraphic approach and following international guidelines. The Faroe Islands Basalt Group (FIBG) has a gross stratigraphic thickness of similar to 6.6 km. dominated by subaerial basalt lava flows, and is subdivided into seven formations. The Lopra Formation forms the basal similar to 1.1 km of the Lopra-1/1A borehole, dominated by hyaloclastites, volcaniclastic sandstones and invasive basaltic lavas/sills. It is overlain by the similar to 3.25 km-thick Formation, dominated by laterally extensive basalt sheet lobes separated by minor volcaniclastic lithologies. The Beinisvoro Formation is overlain by the <15 m-thick.. inter-eruption, coal-bearing facies of the Prestfjall Formation and the <50 m-thick, syn-eruption, pyroclastic and sedimentary facies of the Hvannhagi Formation. Lava flow volcanic activity resumed with the <1.4 km-thick Malinstindur Formation, dominated by thinly bedded compound basalt lava flows. The top of this formation is marked by a regional disconformity surface, overlain by sandstone and conglomerate deposits of the maximum 30 in-thick Sneis Formation, a newly recognised stratigraphic unit. The final phase of volcanism recorded on the Faroe Islands consists of the >900 in-thick Enni Formation composed of a mixture of basalt sheet lobes and compound flows with abundant volcaniclastic units, e.g. the Argir Beds, that may require a further Subdivision at this stratigraphic level. The new lithostratigraphy allows for more refined biostratigraphical and sequence stratigraphic correlations and prepares for a revised geological map of the Faroe Islands.

AB - The Palaeogene volcanic succession of the Faroe Islands in the NE Atlantic Ocean is formalised using a purely lithostratigraphic approach and following international guidelines. The Faroe Islands Basalt Group (FIBG) has a gross stratigraphic thickness of similar to 6.6 km. dominated by subaerial basalt lava flows, and is subdivided into seven formations. The Lopra Formation forms the basal similar to 1.1 km of the Lopra-1/1A borehole, dominated by hyaloclastites, volcaniclastic sandstones and invasive basaltic lavas/sills. It is overlain by the similar to 3.25 km-thick Formation, dominated by laterally extensive basalt sheet lobes separated by minor volcaniclastic lithologies. The Beinisvoro Formation is overlain by the <15 m-thick.. inter-eruption, coal-bearing facies of the Prestfjall Formation and the <50 m-thick, syn-eruption, pyroclastic and sedimentary facies of the Hvannhagi Formation. Lava flow volcanic activity resumed with the <1.4 km-thick Malinstindur Formation, dominated by thinly bedded compound basalt lava flows. The top of this formation is marked by a regional disconformity surface, overlain by sandstone and conglomerate deposits of the maximum 30 in-thick Sneis Formation, a newly recognised stratigraphic unit. The final phase of volcanism recorded on the Faroe Islands consists of the >900 in-thick Enni Formation composed of a mixture of basalt sheet lobes and compound flows with abundant volcaniclastic units, e.g. the Argir Beds, that may require a further Subdivision at this stratigraphic level. The new lithostratigraphy allows for more refined biostratigraphical and sequence stratigraphic correlations and prepares for a revised geological map of the Faroe Islands.

KW - Basalt

KW - facies architecture

KW - stratigraphic marker units

KW - subaerial lava flows

KW - volcaniclastic rocks

KW - beneath Faeroe Islands

KW - Igneous Province

KW - East Greenland

KW - Iceland plume

KW - lava-field

KW - sediments

KW - Scotland

KW - constraints

KW - evolution

KW - eruption

U2 - 10.1017/S1755691009008044

DO - 10.1017/S1755691009008044

M3 - Article

VL - 99

SP - 127

EP - 158

JO - Earth and Environmental Science Transactions of the Royal Society of Edinburgh

JF - Earth and Environmental Science Transactions of the Royal Society of Edinburgh

SN - 1755-6910

IS - 3-4

ER -