DBPapers

MIDDLE AND UPPER JURASSIC IN THE AREA OF PIATRA CRAIULUI (ROMANIA): RECONSTRUCTION OF THE PALEOENVIRONEMENT AND REGIONAL CORRELATIONS

AUTHOR/S: M. FRINCULEASA, AL. ISTRATE
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 1, 97-104 pp

ABSTRACT

Middle and Upper Jurassic deposits from the area of Piatra Craiului are part of the
Piatra Craiului Formation [5] and are made up of deep facies appearing at the surface,
especially on the western side of the massif. On the eastern side, these facies appear
sporadically, thinned due to tectonic effects. Also, they may be accompanied aby lowdepth
carbonatic facies corresponding to the shelf.

Lithologically, it is possible to highlight microconglomerates, quartzitic gritstones, silts,
reef limestone, brown-reddish limestones, black, red and greenish radiolarites,
limestones with siliceous accidents disposed in slates, nodulous pinkish or whitish
limestone (the Member of Valea Bârsei of Bajocian - Lower Tithonic age), reef
limestone, intraclastic breccias (the Member of Şirnea of Upper Oxfordian -
Kimmeridgian, the Member of Măgura Codlei of Tithonic). The study of the thin
sections shows that these deposits are of the bioclastic rudstone type, turning to
bioclastic intraclastic coarse grainstone. The hard ground surfaces and the reef
bioconstructions that appear intercalated in the entire series, being embedded and
developed on the facieses of carbonatic breccias are the characteristics of this time
interval and of this area.

In this study, we intended to present a general outline of the palaeogeographic evolution
of the area of Piatra Craiului circumscribed by the Dâmbovicioara Corridor during the
time interval corresponding to the Middle and Upper Jurassic and also to highlight some
of the important moments of this evolution, situating them in their regional context.

Keywords: palaeogeographic evolution, regional correlations, Middle and Upper Jurassic deposits

Home | Contact | Site Map | Site statistics | Visitors : 132 / 353063

Follow site activity en  Follow site activity GEOLOGY  Follow site activity Papers SGEM2010   ?

CrossRef Member    Indexed in ISI Web Of Knowledge   Indexed in ISI Web Of Knowledge
   

© Copyright 2001 International Multidisciplinary Scientific GeoConference & EXPO SGEM. All Rights Reserved.

Creative Commons License