Paleoenvironmental reconstruction of the Early to Middle Miocene Central Paratethys using stable isotopes from bryozoan skeletons

Key, Marcus M.; Zágoršek, Kamil; Patterson, William P.

doi:10.1007/s00531-012-0786-z

Cited by 15 publications

(12 citation statements)

References 66 publications

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“…On the ba sis of sedimentological anal y ses, coastal up welling has been re peat edly sug gested for Cen tral Paratethys dur ing the Early Mio cene (Grunert et al, 2010, with ref er ences therein) and the Mid dle Mio cene (e.g., Gonera, 2001;Key et al, 2013). C val ues re sult from mix ing with upwelled deeper, more nu trient-rich wa ters con tain ing older dis solved in or ganic car bon with low d C re sults can be in ter preted as sup port for upwelling, and Key et al (2013) sug gested that there could have been upwelling along the north ern mar gin of Carpathian Foredeep if the dom i nant winds were out of the west, as they could have caused upwelling due to the Coriolis ef fect (cf.…”

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“…C val ues re sult from mix ing with upwelled deeper, more nu trient-rich wa ters con tain ing older dis solved in or ganic car bon with low d C re sults can be in ter preted as sup port for upwelling, and Key et al (2013) sug gested that there could have been upwelling along the north ern mar gin of Carpathian Foredeep if the dom i nant winds were out of the west, as they could have caused upwelling due to the Coriolis ef fect (cf. Grunert et al, 2010).…”

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Foraminiferal record of the Middle Miocene climate transition prior to the Badenian salinity crisis in the Polish Carpathian Foredeep Basin (Central Paratethys)

Peryt

2012

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Foraminifers oc cur ring in marls un der ly ing the Mid dle Mio cene Badenian gyp sum in the north ern Pol ish Carpathian Foredeep in one bore hole sec tion [M³yny (Busko) PIG 1] and in two dewatering pits in op er at ing quar ries (Leszcze and Borków) con tain well-pre served foraminifers. Sixty-seven spe cies of ben thic and twenty-one spe cies of plank tonic foraminifers are re corded in the 12-m-thick sec tion of the M³yny bore hole. Ben thic as sem blages are char ac ter ized by the dom i nance of Bulimina and Uvigerina while plank tonic as sem blages are com posed mainly by warm-wa ter orbulinids and Globigerinoides spp. in the lower part of the M³yny sec tion and by tem per ate-cold wa ter Globigerina spp. in the up per part of the M³yny sec tion as well as the Leszcze and Borków sec tions. The tax o nomic com po si tion of foraminiferal as sem blages makes it pos si ble to dis tin guish two foraminiferal zones in the M³yny bore hole: the Orbulina suturalis and Uvigerina costai zones, and only the lat ter zone is ac ces si ble at Leszcze and Borków. The ben thic foraminiferal suc ces sions in the stud ied inter val sug gest ox y gen a tion and pro duc tiv ity changes in the Carpathian Foredeep Ba sin prior to the Badenian sa lin ity cri sis. Four in ter vals of low ered ox y gen a tion and/or el e vated or ganic flux to the sea-floor are rec og nized; the in ter vals in which foraminiferal as sem blages sug gest ma rine en vi ron ments with low ered ox y gen a tion in bot tom wa ters al ter nate be tween the in ter vals where stress mark ers form less than 50% of the ben thic foraminiferal as sem blages. Ben thic as sem blages are moder ately to highly di ver si fied, and spe cies have more equal fre quen cies. The upsection de crease in the pro por tion of planktonic foraminifers re flects the shallowing of the ba sin ac com pa nied by a de crease in the tem per a ture gra di ent be tween the up per (warmer) and deeper (colder) wa ter beds. The av er age palaeotemperature of wa ter based on d18 O of Uvigerina and Globigerina de creased by ca. 2 and ca. 6°C, re spec tively (from 9.9 and 17.4°C in the Orbulina suturalis Zone to 7.9 and 11.5°C in the Uvigerina costai Zone, re spec tively). Be low the gyp sum, the d 18 O val ues of both ben thic and plank tonic foraminifers show quite large vari a tions pos si bly due to the sa lin ity in crease. Co eval dom i na tion of ben thic foraminiferal assem blages by Bulimina sug gests in creased sur face wa ter pro duc tiv ity and an in creased or ganic flux to the sea-floor prior to the on set of evaporite de po si tion and/or sa lin ity in crease.

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Foraminiferal record of the Middle Miocene climate transition prior to the Badenian salinity crisis in the Polish Carpathian Foredeep Basin (Central Paratethys)

Peryt

2012

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“…Tak ing in ac count that the de pos its of the Stebnyk For ma tion and co eval strata are not suit able for devel op ment of such fauna due to con ti nen tal or hypersaline con di tions, the in crease in the tem per a ture noted prob a bly touched also the east ern part of the Carpathian Foredeep and in flu enced sed i men ta tion of the Stebnyk For ma tion. Lower tem per a tures ob tained on the ba sis of ox y gen iso topes from bryo zoan skel e tons, mainly for the Vi enna Ba sin and the western part of the Carpathian Foredeep, and re lated to upwelling (Key et al, 2013) may rather re flect lo cal con di tions. Con tin uous Late Paleogene-Neo gene aridification of the cli mate, known from the Eur asian in te rior and from the North ern Hemisphere in gen eral, was re lated to global cool ing and its con sequences (Tang and Ding, 2013).…”

Section: Palaeoclimatic Aspectsmentioning

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The Stebnyk Formation (Miocene) in the Boryslav-Pokuttya and Sambir nappes of the Ukrainian Carpathians: a record of environmental change in the Carpathian Foredeep

Oszczypko

Uchman

Bubniak

2016

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“…The CPN 8 base cor re sponds to the in tense drop of tem per a ture due to global Mi3 event (cf. Gonera, 2001;Gonera et al, 2000Gonera et al, , 2003Baldi, 2006;Peryt and Gedl, 2010;Harzhauser et al, 2011;Key et al, 2013). In the Up per Silesia Ba sin the per cent age of plank tonic foraminifers con sid er ably in creased; al though it was only this one men tioned taxon.…”

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Globorotaliid intervals of the sub-evaporite Badenian (Middle Miocene) in the Upper Silesia Basin (Central Paratethys, Poland)

Gonera

2013

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Globorotaliids of the Skawina For ma tion (Badenian) come from de pos its rep re sent ing CPN 7 (Orbulina suturalis Zone) and CPN 8 sub-evaporite Wielician (Globigerina druryi-G. decoraperta Zone alias Uvigerina costai Zone) age. There are two taxo nomic groups of globorotaliids in the stud ied ma te rial: globoconellids (Globoconella bykovae and G. minoritesta) and jenkinsellids (Jenkinsella mayeri and J. transsylvanica). There are five stratigraphically-rank in ter vals of these foraminifers prior to the Mid dle Badenian sa lin ity cri sis in Cen tral Paratethys. The in ves ti gated Badenian be gins with G. bykovae-J. mayeri as so ci a tion fol lowed by the first occurence (FO) of J. transsylvanica. The clos ing mem ber of the CPN 7 biozone is the G. bykovae-J. transsylvanica as sem blage. The jenkinsellids dis ap pear dur ing CPN 7: J. mayeri first and J. transsylvanica af ter. Since the base of CPN 8 in situ jenkinsellids have not been noted in the Badenian de pos its. The CPN 8 be gins with a strati graphic in ter val bar ren of globorotaliids (biozone IIC in the Pol ish Paratethys). It is fol lowed by ep i sodic ap pear ances of globoconellids (G. bykovae and G. minoritesta) in the sub-evaporite Wielician (IID biozone in Po land). G. minoritesta has been found in only one case so far. The globorotaliid strati graphic units are dis tinct and well-cor re lated with changes in cli mate and the cir cu la tion of wa ter masses in Paratethys. This study pro vides ad di tional data on Mi3 in Paratethys. It doc u ments a cryp tic cool ing event in the late Orbulina suturalis Zone (mid CPN 7) lo cated at the late IIA-B assem blage (alias up per lagenide zone) in re gional biostratigraphic scale. The event is re corded by J. transsylvanica Acme, match ing with circa 1‰VPDB d18 O pos i tive ex cur sion. The event must have re sulted in a con sid er able sea level drop -a trigger of the Moravian eco sys tem de mo li tion in the Paratethys en vi ron ment.

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Paleoenvironmental reconstruction of the Early to Middle Miocene Central Paratethys using stable isotopes from bryozoan skeletons

Cited by 15 publications

References 66 publications

Foraminiferal record of the Middle Miocene climate transition prior to the Badenian salinity crisis in the Polish Carpathian Foredeep Basin (Central Paratethys)

Foraminiferal record of the Middle Miocene climate transition prior to the Badenian salinity crisis in the Polish Carpathian Foredeep Basin (Central Paratethys)

The Stebnyk Formation (Miocene) in the Boryslav-Pokuttya and Sambir nappes of the Ukrainian Carpathians: a record of environmental change in the Carpathian Foredeep

Globorotaliid intervals of the sub-evaporite Badenian (Middle Miocene) in the Upper Silesia Basin (Central Paratethys, Poland)

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