MEGASEISMITES IN THE TYPE AREA OF THE LANCE FORMATION (MAASTRICHTIAN, CRETACEOUS; NIOBRARA COUNTY, WYOMING)

2018 ◽  
Author(s):  
Kurt Wise ◽  
Keyword(s):  
Type Area

Global type area charnockites in southern India revisited: Implications for Earth's oldest supercontinent

2021 ◽  
Author(s):  
Cheng-Xue Yang ◽  
M. Santosh ◽  
T. Tsunogae ◽  
E. Shaji ◽  
Pin Gao ◽  
...  
Keyword(s):  
Southern India ◽  
Type Area ◽  
Global Type

St Audrie's Bay, Somerset, England: a candidate Global Stratotype Section and Point for the base of the Jurassic System

1994 ◽  
Vol 131 (2) ◽  
pp. 191-200 ◽  
Author(s):  
G. Warrington ◽  
J. C. W. Cope ◽  
H. C. Ivimey-Cook
Keyword(s):  
Type Locality ◽  
International Commission ◽  
The West ◽  
West Side ◽  
Type Area ◽  
Jurassic System ◽  
Stratotype Section

AbstractIn 1967 the Somerset coastline near Watchet was proposed as the type area of the basal (Planorbis) chronozone of the Hettangian Stage and thus of the Jurassic System. Neither at that time nor subsequently, however, has a type locality and section been nominated from those available in the area. There is urgent need to select a Global Stratotype Section and Point (GSSP) for the base of the Hettangian, and of the Jurassic System. The cliff forming the headland at the west side of St Audrie's Bay, three kilometres east of Watchet, Somerset, is here proposed as the type locality and section, with the base of the Hettangian Stage, at the base of the Planorbis Chronozone, being placed at the horizon currently recognized as that at which ammonites of the genus Psiloceras appear. In this section the base of the Planorbis Chronozone corresponds with the base of the Psiloceras planorbis Biozone. The proposal of this section is conditioned by the availability of comprehensive litho- and biostratigraphic information, and the ability of the section to fulfil International Commission on Stratigraphy (ICS) requirements for a candidate GSSP.

scholarly journals New plesiosaurid material from the Maastrichtian type area, the Netherlands

2019 ◽  
Vol 98 ◽  
Author(s):  
Feiko Miedema ◽  
Anne S. Schulp ◽  
John W.M. Jagt ◽  
Eric W.A. Mulder
Keyword(s):  
The Netherlands ◽  
Caudal Vertebra ◽  
Type Area ◽  
Juvenile Individual

Abstract Here we report on a newly collected, well-preserved vertebral centrum of a plesiosaur from the type area of the Maastrichtian Stage in southern Limburg. The specimen is interpreted as a caudal vertebra that originated from an osteologically immature or juvenile individual, as evidenced by the position of the pedicular facets, the presence of a notochord pit and the absence of fused neural arches. It adds to the meagre record of sauropterygians in the area.

TOPONOGOV-TYPE AREA COMPARISON THEOREM OF 2-DIMENSIONAL MANIFOLDS

2013 ◽  
Vol 15 (03) ◽  
pp. 1350007
Author(s):  
XIAOLE SU ◽  
HONGWEI SUN ◽  
YUSHENG WANG
Keyword(s):  
Riemannian Manifold ◽  
Comparison Theorem ◽  
Constant Curvature ◽  
Dimensional Manifold ◽  
Geodesic Triangle ◽  
Type Area ◽  
Simply Connected

Let △p1p2p3 be a geodesic triangle on M, a complete 2-dimensional Riemannian manifold of curvature ≥ k, and let [Formula: see text] be its comparison triangle on [Formula: see text] (a complete and simply connected 2-dimensional manifold of constant curvature k). Our main result is that if △p1p2p3 is areable, then its area is not less than that of [Formula: see text].

scholarly journals The fauna and chronostratigraphy of the middle Miocene Mascall type area, John Day Basin, Oregon, USA

PaleoBios ◽  
2018 ◽  
Vol 35 ◽  
Author(s):  
Kaitlin Clare Maguire ◽  
Joshua X. Samuels ◽  
Mark D. Schmitz
Keyword(s):  
Middle Miocene ◽  
Type Area ◽  
John Day

scholarly journals Pridolian graptolites and their use in correlation

1987 ◽  
Vol 35 ◽  
pp. 217-222
Author(s):  
L. Teller
Keyword(s):  
Type Area ◽  
The World ◽  
Barrandian Area

The use of graptolites to subdivide the youngest (Pridoli) stratotype of the Silurian System in the Barran­dian poses difficulties for correlation with other regions. The proposed zonal subdivision is the same as that established earlier by Pfibyl in 1940. Since that time, however, various graptolites of the same age have been recognized in several sections all over the world. This abundance of new data makes detailed zonal correlation with the Barrandian area much more difficult because the Barrandian graptolites are probably not fully documented. The absence of some taxa may be due to condensed carbonate sedimenta­tion in which sedimentary gaps are to be expected. It can not be excluded, however, that undiscovered graptolites still exist in the Pridoli Series of the type area. The graptolites aside, other fauna! groups in the Pridoli Series are unfortunately strongly endemic and thus their correlation value is weak.

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