Cool early Albian climates:  new data from Argentina

D Pirrie; JD Marshall; P Doyle; AC Riccardi

doi:10.1016/j.cretres.2003.10.002

Cool early Albian climates: new data from Argentina

D Pirrie^*, JD Marshall, P Doyle, AC Riccardi

^*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

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Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf. stimulus from early Albian deposits of the Rio Mayer Formation of Lago San Martin, southern Argentina are presented. Oxygen isotope values for diagenetically least altered samples give values ranging between delta(18)O +0.07 and +0.96 vPDB, which equate to a mean palaeotemperature of 9.5 degreesC (assuming delta(w) of -1.2parts per thousand SMOW). These data are consistent with a model of cool early Albian shelf seas in the Southern Hemisphere. (C) 2004 Elsevier Ltd. All rights reserved.

Iaith wreiddiol	Saesneg
Tudalennau (o-i)	27-33
Nifer y tudalennau	7
Cyfnodolyn	Cretaceous Research
Cyfrol	25
Rhif cyhoeddi	1
Dynodwyr Gwrthrych Digidol (DOIs)	https://doi.org/10.1016/j.cretres.2003.10.002
Statws	Cyhoeddwyd - Chwef 2004

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10.1016/j.cretres.2003.10.002Trwydded: CC BY-NC-ND

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@article{b461ab5a16304a3bb001264cf540bbef,

title = "Cool early Albian climates: new data from Argentina",

abstract = "Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf. stimulus from early Albian deposits of the Rio Mayer Formation of Lago San Martin, southern Argentina are presented. Oxygen isotope values for diagenetically least altered samples give values ranging between delta(18)O +0.07 and +0.96 vPDB, which equate to a mean palaeotemperature of 9.5 degreesC (assuming delta(w) of -1.2parts per thousand SMOW). These data are consistent with a model of cool early Albian shelf seas in the Southern Hemisphere. (C) 2004 Elsevier Ltd. All rights reserved.",

keywords = "Albian, palaeoclimates, Argentina, dimitobelid belemnites, JAMES-ROSS-ISLAND, OXYGEN ISOTOPIC COMPOSITION, MESOZOIC BELEMNOIDEA, HIGH-LATITUDES, ANTARCTICA, AUSTRALIA, GREENHOUSE, BELEMNITES, RECORDS, PALEOTEMPERATURES",

author = "D Pirrie and JD Marshall and P Doyle and AC Riccardi",

year = "2004",

month = feb,

doi = "10.1016/j.cretres.2003.10.002",

language = "English",

volume = "25",

pages = "27--33",

journal = "Cretaceous Research",

issn = "0195-6671",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Cool early Albian climates

T2 - new data from Argentina

AU - Pirrie, D

AU - Marshall, JD

AU - Doyle, P

AU - Riccardi, AC

PY - 2004/2

Y1 - 2004/2

N2 - Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf. stimulus from early Albian deposits of the Rio Mayer Formation of Lago San Martin, southern Argentina are presented. Oxygen isotope values for diagenetically least altered samples give values ranging between delta(18)O +0.07 and +0.96 vPDB, which equate to a mean palaeotemperature of 9.5 degreesC (assuming delta(w) of -1.2parts per thousand SMOW). These data are consistent with a model of cool early Albian shelf seas in the Southern Hemisphere. (C) 2004 Elsevier Ltd. All rights reserved.

AB - Previous studies on the stable isotope geochemistry of dimitobelid belemnites from Antarctica and Australia indicated cool climatic conditions during the early Albian in the shelf seas around the Gondwanan margin. In this paper new analyses from diagenetically unaltered specimens of Dimitobelus cf. stimulus from early Albian deposits of the Rio Mayer Formation of Lago San Martin, southern Argentina are presented. Oxygen isotope values for diagenetically least altered samples give values ranging between delta(18)O +0.07 and +0.96 vPDB, which equate to a mean palaeotemperature of 9.5 degreesC (assuming delta(w) of -1.2parts per thousand SMOW). These data are consistent with a model of cool early Albian shelf seas in the Southern Hemisphere. (C) 2004 Elsevier Ltd. All rights reserved.

KW - Albian

KW - palaeoclimates

KW - Argentina

KW - dimitobelid belemnites

KW - JAMES-ROSS-ISLAND

KW - OXYGEN ISOTOPIC COMPOSITION

KW - MESOZOIC BELEMNOIDEA

KW - HIGH-LATITUDES

KW - ANTARCTICA

KW - AUSTRALIA

KW - GREENHOUSE

KW - BELEMNITES

KW - RECORDS

KW - PALEOTEMPERATURES

U2 - 10.1016/j.cretres.2003.10.002

DO - 10.1016/j.cretres.2003.10.002

M3 - Article

VL - 25

SP - 27

EP - 33

JO - Cretaceous Research

JF - Cretaceous Research

SN - 0195-6671

IS - 1

ER -

Cool early Albian climates: new data from Argentina

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