Large-scale magmatic pulses drive plant ecosystem dynamics

The 6.6 km gross thickness of the Palaeogene lava field of the Faroe Islands Basalt Group was erupted in the initial phases of North Atlantic rifting. Thin interlava sedimentary rocks yield palynofloras that vary in composition and diversity with the duration of the interlava period. Long-term trend...

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Bibliographic Details
Main Authors: David W. Jolley, Simon R. Passey, Malcolm Hole, John Millett
Format: Dataset
Language:unknown
Published: 2016
Subjects:
Geology
magmatic
trend
pulse
eruption tempo
Palaeogene lava field
Faroe Islands Basalt Group
duration
disturbance
thickness
palynoflora
TiO
interlava
6.6
MgO
diversity
North Atlantic rifting
basalt lava flows show
Thin
phase
vegetation ecosystem dynamics
substrate
km
fractionation
succession
Faroe Islands
North Atlantic
Online Access:https://doi.org/10.6084/m9.figshare.3453095.v1
https://figshare.com/articles/Large-scale_magmatic_pulses_drive_plant_ecosystem_dynamics/3453095
Description
Summary:The 6.6 km gross thickness of the Palaeogene lava field of the Faroe Islands Basalt Group was erupted in the initial phases of North Atlantic rifting. Thin interlava sedimentary rocks yield palynofloras that vary in composition and diversity with the duration of the interlava period. Long-term trends in plant ecological succession occur within the record, each reflecting initially rapid and subsequently slowing eruption tempo. TiO 2 and MgO plots derived from the basalt lava flows show corresponding fractionation trends. These link melt column processes to vegetation ecosystem dynamics via controls on eruption tempo, thermal support and substrate disturbance.

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