Ammonite faunas and stratigraphy of Lower Cretaceous by JenFo Nagy

By JenFo Nagy

Show description

Read Online or Download Ammonite faunas and stratigraphy of Lower Cretaceous (Albian) rocks in southern Spitsbergen PDF

Best nonfiction_2 books

The Arab World: Facing the Challenge of the New Millenium

The basic alterations that the Arab international locations are at the moment experiencing, necessitate robust management within the monetary and political spheres, daring judgements, and long term concepts for destiny prosperity. Henry Azzam examines the choices for every kingdom, and offers important facts on their person economies, banking, inventory and bond markets.

Guns to the Far East (The Phillip Hazard Novels, 7)

The Crimean warfare has ended finally, and Phillip possibility reveals himself in China, serving below the fiery Commodore Keppel. The British pull off a rousing victory opposed to a chinese language junk fleet at Fatsham Creek, yet later danger is dismayed to listen to of the good Mutiny in India. nervous that his sisters are stuck up within the brutal clash, he joins British reduction forces combating to arrive the besieged northern Indian cities of Cawnpore and Lucknow.

Disposal of Neutralent Wastes

A evaluate of reports performed by means of the Committee on evaluation and evaluate of the military Non-Stockpile Chemical fabric Disposal software at the technical elements of the U. S. military Non-Stockpile Chemical fabric Disposal application. Evaluates applied sciences and safeguard strategies for disposal of chemical wastes, akin to the disposal of CAIS checking out kits and nonincineration.

Extra resources for Ammonite faunas and stratigraphy of Lower Cretaceous (Albian) rocks in southern Spitsbergen

Sample text

Description: - The shell is discoidal in outline with comparatively narrow umbilicus and slightly convex whorl sides. Ornamentation consists of commashaped umbilical bullae, prominent ribbing, and large, subconical ventral clavi. At a diameter of c. 115 mm the shell bears 13 umbilical bullae per whorl. Each umbilical bulla gives rise to one or two ribs, which terminates in the ventral clavi. Near umbilicus the ribs are low and narrow, but show a strong increase in height and breadth towards the venter.

1931: The Gastroplites and other Lower Cretaceous faunas of the Northern Great Plains. - Royal Soc. Canada Proc. , ser, Ill, XXV, sec. IV, 1-7. Ottawa. 1933: The ammonoid genera Gastroplites and Neogastroplites. - Idem, ser. Ill, XXVII, sec. IV, 13-24. Ottawa. MILBOURNE, R. , 1963: The Gault at Ford Place, Wortham, Kent. - Proc. Geol. , 74, part I, 55-79. London. NATHORST, A. , 1910a: Beitrage zur Geologie der Baren-Insel, Spitzbergens und des KonigKarl-Landes. - Bull. Geol. Inst. Unio, Upsala, X, 261-416.

The majority of the specimens are crushed laterally. Description: - The whorls are higher than wide, with trapezoidal section that is widest at the umbilical bullae. The venter is subtabulate and lacks a distinct siphonal depression. The umbilical wall is subvertical at base, but rounds evenly into the gently convex flanks. At a diameter of 68 mm the shell bears 16-18 primary and 19-21 secondary ribs per whorl. The dorsal ends of the primary ribs are swollen, and form distinct umbilical bullae.

Download PDF sample

Rated 4.53 of 5 – based on 22 votes