Viséan and Bashkirian ammonoids from Central Iran
HAIRAPETIAN V.1, KORN D.2, BAHRAMI A.3
1Department of Geology, Islamic Azad University, Khorasgan branch, P.O. Box 81595-158, Esfahan, Iran.
vachik@khuisf.ac.ir
2Museum für Naturkunde der Humboldt-Universität zu Berlin, Invalidenstraße 43, D-10115 Berlin, Germany.
dieter.korn@museum.hu-berlin.de
3Department of Geology, Faculty of Sciences, University of Esfahan, Esfahan 81746, Iran.
bahrami_geo@yahoo.com
ABSTRACT: TTwo successions of Carboniferous sedimentary rocks in Central Iran yielded
ammonoid assemblages from one horizon each. In the Ramsheh section, a siltstone
with Neoglyphioceras
yazdii n. sp. and Dombarites can be assigned to the latest Viséan.
The assemblage from the Shesh Angosht Mountain is more diverse with species
of the genera Proshumardites, Eumorphoceras, Homoceras, Glaphyrites,
Syngastrioceras, and Dombarocanites. This is the first time
that the co-occurrence of the genera
Eumorphoceras and Homoceras has been recorded. This fauna
contains elements of the South Urals and Central Asian occurrences of
Bashkirian ammonoids and suggests close palaeobiogeographic relationships.
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Palaeontology and biostratigraphy of the Middle-Upper Coniacian and Santonian inoceramids of the US Western Interior
WALASZCZYK I.1, COBBAN W. A.2
1Faculty of Geology, University of Warsaw, Al. Zwirki i Wigury 92, PL-02-089 Warszawa, Poland.
i.walaszczyk@uw.edu.pl
2270 Estes Street, Lakewood, Colorado 80226, USA
ABSTRACT: The taxonomy of the Middle-Late Coniacian and Santonian inoceramids of the
US Western Interior, including some specimens from the Canadian Western Interior,
is revised, based mainly on the extensive collections of the US Geological
Survey. The classic Meek and Hayden material is discussed. Forty-four species
are described of which 5 are new: Inoceramus americanus, Inoceramus
sokolovi, Inoceramus robertsoni, Inoceramus glacierensis,
and Sphenoceramus gilli. The Middle Coniacian to Santonian
inoceramids of the Western Interior represent a uniform Euramerican fauna.
This allows the application of a uniform biostratigraphical zonation throughout
the whole biogeographical region. Starting in the Late Coniacian, inoceramid
faunas are characterised by relatively strong north-south biogeographic differentiation. The
inoceramid zonation applied is discussed, diagnosed, and compared to previously
used schemes, and to the ammonite zonation commonly used in the US Western Interior.
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Methods and results of groundwater vulnerability evaluation to contamination in the Kampinoski National Park, central Poland
KROGULEC E.
Warsaw University, Faculty of Geology, Zwirki i Wigury 93, 02-089 Warszawa, Poland.
ewa.krogulec@uw.edu.pl
ABSTRACT: Aquifer vulnerability maps are valuable tools for communicating concerns about the level of groundwater
pollution hazard to local landuse planners and to the general public. Groundwater vulnerability
to contamination in the Kampinoski National Park (KNP) area in central Poland was evaluated as a
basis for developing appropriate protection strategy for the groundwater resources and management in
recreation areas located near Warsaw. Assessment was accomplished using U.S. EPA DRASTIC and
the residence time in the unsaturated zone of a conservative pollutant. The final DRASTIC values have
been grouped into medium (37 % of area) and medium high (52 %) intrinsic vulnerability categories.
The residence time in the unsaturated zone is classified in 11 intervals, ranging from 30 days to 30 years,
but nearly 75 % of the study area is characterized by intervals from 1 to 3 years.
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The early Viséan (Carboniferous) conodonts from the Saoura Valley, Algeria
NEMYROVSKA T. I.1, PERRET-MIROUSE M.-F.2, WEYANT M.3
1Institute of Geological Sciences of the National Academy of Sciences of Ukraine,O.Gonchar Str., 55-b, 052054 Kiev, Ukraine.
tnemyrov@i.com.ua, nemyrovska@mail.ru
2Université Paul Sabatier, Laboratoire de Mécanismes et Transferts en Géologie, Equipe de géodynamique, 14 Avenue Edouard Belin, 31400, Toulouse, France.
perret@lmtg.obs-mip.fr
371 rue Alfred Harel, Anisy, 14610 THAON, France.
marcelweyant@wanadoo.fr
ABSTRACT: The present study reports on conodonts from the El Hariga Formation (lower
Viséan) of the Saoura Valley, Algeria. This formation overlies the Hassi Sguilma
Formation with the latest Tournaisian conodont assemblage with Scaliognathus
anchoralis and it is overlain by the Mazzer Formation
with the mid-Viséan conodont fauna with Gnathodus bilineatus. The
conodont assemblage of the El Hariga Formation contains the latest Tournaisian
gnathodontids and the Viséan Pseudognathodus and unornamented
early Viséan species of Lochriea. A new species, Lochriea saharae,
a probable earliest representative of Lochriea is described. Its relationships to L. cracoviensis, L. commutata and Bispathodus
stabilis are discussed.
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