scholarly journals The Jurassic to Palaeogene strata in the northern boundary fault zone in deep borehole PD-9 at Szczawnica, Pieniny Klippen Belt, West Carpathians, Poland: biostratigraphy and tectonic implications

2019 ◽  
Author(s):  
Krzysztof Birkenmajer ◽  
Przemysław Gedl
Keyword(s):  
Fault Zone ◽  
Deep Borehole ◽  
Northern Boundary ◽  
Boundary Fault ◽  
Tectonic Implications ◽  
West Carpathians ◽  
Pieniny Klippen Belt

Ages of carbonatites and other alkaline rocks in Quebec

1968 ◽  
Vol 5 (6) ◽  
pp. 1401-1407 ◽  
Author(s):  
Ronald Doig ◽  
Jackson M. Barton Jr.
Keyword(s):  
Northern Boundary ◽  
Alkaline Rocks ◽  
Continuous Structure ◽  
Boundary Fault ◽  
Igneous Activity ◽  
Lowland Area

Potassium-argon ages have been determined for alkaline rocks, including carbonatites, from some fifteen localities in Quebec. Nine centers of intrusion, including two previously documented localities, yield ages in the range 400 to 600 million years. All but two of these are located on or very near the northern boundary fault of the St. Lawrence graben system. Included in this group are four carbonatites with remarkably similar ages of intrusion (565 m.y.). The existence of this widespread coeval igneous activity along a 1200-mile segment of the lowland area and its westward extension supports the hypothesis that the St. Lawrence graben is a continuous structure, and indicates that the system has been active for at least 600 million years.

V.—On the Exmoor Earthquake of January 23, 1894, and on its Relation to the Northern Boundary Fault of the Morte Slates

1896 ◽  
Vol 3 (12) ◽  
pp. 553-556
Author(s):  
Charles Davison
Keyword(s):  
Northern Boundary ◽  
Boundary Fault

A Slight earthquake of intensity IV, according to the Rossi-Forel scale, was felt in and near Exmoor at about 9 a.m. on January 23, 1894. Its interest lies, not so much in the seismic phenomena presented by it, as in its connection with the northern boundary fault of the Morte Slates.

Carboniferous Highly Fractionated I‐type Granites from the Kalamaili Fault Zone, Eastern Xinjiang, NW China: Petrogenesis and Tectonic Implications

2019 ◽  
Vol 93 (5) ◽  
pp. 1169-1187
Author(s):  
Peng SONG ◽  
Tao WANG ◽  
Ying TONG ◽  
Jianjun ZHANG ◽  
He HUANG ◽  
...  
Keyword(s):  
Fault Zone ◽  
Nw China ◽  
Tectonic Implications

scholarly journals Magneto-, and isotope stratigraphy around the Jurassic/Cretaceous boundary in the Vysoká Unit (Malé Karpaty Mountains, Slovakia): correlations and tectonic implications

2010 ◽  
Vol 61 (4) ◽  
pp. 309-326 ◽  
Author(s):  
Jacek Grabowski ◽  
Jozef Michalík ◽  
Andrzej Pszczółkowski ◽  
Otília Lintnerová
Keyword(s):  
Clockwise Rotation ◽  
Rock Magnetic Properties ◽  
Magnetic Stratigraphy ◽  
Tectonic Implications ◽  
Isotope Record ◽  
Ca 50 ◽  
Pieniny Klippen Belt ◽  
Isotope Stratigraphy ◽  
Central Western Carpathians ◽  
Lower Berriasian

Magneto-, and isotope stratigraphy around the Jurassic/Cretaceous boundary in the Vysoká Unit (Malé Karpaty Mountains, Slovakia): correlations and tectonic implications Magneto- and isotope stratigraphic studies in the Vysoká Nappe (Hlboča section, Fatric Unit, Malé Karpaty Mts, Slovakia) were performed. A generally decreasing δ13C isotope curve is interpreted as a primary trend from the Late Oxfordian (3.3 ‰ V-PDB) to the Late Tithonian (1.8-1.4 ‰ V-PDB). Data from the Tithonian part of the Tegernsee Formation probably reflect "local" basin processes connected with the breccia formation in the latest Tithonian/earliest Berriasian and/or with possible diagenetic overprint. The C-isotope record of the Berriasian Padlá Voda Formation is more homogeneous (1.4-1.8 ‰ V-PDB) and assumed to be primary. Magnetostratigraphic investigations were focused on the Jurassic/Cretaceous (J/K) boundary strata. Upper Tithonian nodular limestones of the Tegernsee Formation differ substantially from Lower Berriasian calpionellid limestones of the Padlá Voda Formation in rock magnetic properties. Hematite is present in the Tegernsee Formation, while magnetite is the only magnetic mineral of the Padlá Voda Formation. Additionally, the latter formation contains superparamagnetic magnetite, which significantly influences its magnetic susceptibility. Correlation of normal and reversed magnetic intervals with the Late Tithonian global polarity time scale was supported by microfossil stratigraphy. M21n to M20n magnetozones were distinguished, including the short reversed Kysuca (M20n1r) Subzone within M20n. Interpretation of Lower Berriasian magnetostratigraphy was more complex due to presence of breccia horizons and a stratigraphic gap at the J/K boundary in the lower part of the Padlá Voda Formation embracing M19r and most of M19n magnetozones. This formation was also partially affected by remagnetization. Detailed correlation between the isotope- and magnetic stratigraphy of the Tithonian-Berriasian interval between Hlboča and Brodno sections is also complex due to J/K stratigraphical gap within the Hlboča section. The primary B component accounts for counter-clockwise rotation of the Vysoká Unit with a magnitude of ca. 50°. Since the paleodeclination of Paleogene and Karpatian-Eggenburgian rocks in the area is similar, the rotation must have taken place after Early Miocene. The paleoinclinations of several Upper Tithonian-Berriasian sections of the Central Western Carpathians and western part of the Pieniny Klippen Belt are consistent and indicate paleolatitude of 27-30°N.

Holocene activity evidence on the southeast boundary fault of Heqing basin, middle segment of Heqing-Eryuan fault zone, West Yunnan Province, China

2017 ◽  
Vol 14 (7) ◽  
pp. 1445-1453 ◽  
Author(s):  
Chang-bin Sun ◽  
De-wen Li ◽  
Xiao-ming Shen ◽  
Yan-rui Kang ◽  
Rui Liu ◽  
...  
Keyword(s):  
Fault Zone ◽  
Yunnan Province ◽  
Middle Segment ◽  
Boundary Fault ◽  
Holocene Activity ◽  
Heqing Basin
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