Magnetostratigraphy of the lower member of the hadar formation (Ethiopia): Evidence for a short normal event in the mammoth subchron

1996 ◽  
Vol 40 (3) ◽  
pp. 313-335 ◽  
Author(s):  
Endale Tamrat ◽  
Nicolas Thouveny ◽  
Maurice Taieb
Keyword(s):  
Lower Member ◽  
Hadar Formation

Stratigraphy and sedimentology of the Hadar Formation Afar, Ethiopia

1997 ◽  
Author(s):  
Tesfaye Yemane
Keyword(s):  
Hadar Formation

DIATOMS FROM THE PLIOCENE HADAR FORMATION, AFAR DEPRESSION, ETHIOPIA

2016 ◽  
Author(s):  
Joseph Mohan ◽  
◽  
Jeffery R. Stone ◽  
Christopher J. Campisano
Keyword(s):  
Afar Depression ◽  
Hadar Formation

Industrial disability in the Japanese railways business: the activity of Testudō Kōsaikai, 1931–1955

2021 ◽  
pp. 1-17
Author(s):  
Toshitaka Nagahiro
Keyword(s):  
Job Training ◽  
Family Members ◽  
Lower Degree ◽  
Historical Study ◽  
Postwar Period ◽  
Disabled People ◽  
Railroad Industry ◽  
Lower Member ◽  
Degree Of Disability ◽  
Industrialization Process

Abstract The industrialization process generated many disabilities. However, the historical study of industrial disability has not progressed. This study examines disability welfare in the Japanese railroad industry. In particular, Testudō Kōsaikai, an organization of the Japanese National Railways (JNR) established in 1931, was uniquely devoted to welfare activities by linking a profit-making business and the provision of welfare. To cover welfare costs, such as providing workshops for disabled people, Kōsaikai conducted profit-making businesses, such as sales at station stalls. However, the welfare of disabled people in the JNR, including the activities of Kōsaikai, has not been previously examined. This study clarified the structure of disability welfare in the Japanese railroad industry until the early postwar period. People with a lower degree of disability, such as one upper or lower member amputation, were employed by the JNR, while some of these people were employed by Kōsaikai as sellers or officers, or accepted job training in Kōsaikai workshops. On the contrary, although few people with higher degrees of disability were employed by the JNR and Kōsaikai, the latter employed their family members to compensate them for their living costs.

Restudy of the Llandovery conodont biostratigraphy in the Xiushan area, Chongqing City, China

2016 ◽  
Vol 53 (7) ◽  
pp. 651-659
Author(s):  
Zhongyang Chen ◽  
Chengyuan Wang ◽  
Ru Fan
Keyword(s):  
South China ◽  
Main Part ◽  
Yangtze Platform ◽  
Conodont Biostratigraphy ◽  
Lower Member ◽  
Chongqing City

Previous studies of conodonts suggested that the upper member of the Xiushan Formation (late Llandovery) corresponds to the Pterospathodus eopennatus Superbiozone, but no data were obtained from the lower member in the Xiushan area. In this study, the entire Xiushan Formation was resampled from the Datianba section in the Xiushan area of Chongqing City on the Yangtze Platform in South China. In total, 40 samples were collected and processed. Fifteen of these samples contained identifiable conodont specimens. The present study indicates that the lower member and main part of the upper member of the Xiushan Formation correspond to the Pterospathodus eopennatus Superbiozone, while the top of the upper member probably correlates with the Pterospathodus celloni Superbiozone.

High-Resolution Sequence Stratigraphy in the Lower Member of Es2 in Shanghe Oilfield

2011 ◽  
Author(s):  
Lihua Gao ◽  
Zuozhen Han ◽  
Xiangqing Yu ◽  
Naijie Chi ◽  
Zhen Qin ◽  
...  
Keyword(s):  
High Resolution ◽  
Sequence Stratigraphy ◽  
Lower Member ◽  
High Resolution Sequence Stratigraphy

scholarly journals Trans-border (south-east Serbia/west Bulgaria) correlations of the Jurassic sediments: Infra-Getic Unit

2006 ◽  
pp. 19-33 ◽  
Author(s):  
Platon Tchoumatchenco ◽  
Dragoman Rabrenovic ◽  
Barbara Radulovic ◽  
Vladan Radulovic
Keyword(s):  
Lower Jurassic ◽  
Geological Heritage ◽  
Black Shales ◽  
Point Of View ◽  
The West ◽  
Coal Beds ◽  
Lower Member ◽  
Upper Bajocian ◽  
Upper Boundary ◽  
Lower Bathonian

The Infra-Getic Unit is a palaeogeographic unit, predestined by palaeotectonics. From the point of view of geological heritage, it represents a geosites framework. For the purpose of the correlation, the Serbian sections of Lukanja, Bogorodica Monastery, Rosomac and Senokos, as well as the Bulgarian sections of Komshtitsa, Gintsi, and Stanyantsi were used. The Jurassic sediments of the Infra-Getic Unit crop out on the southern slops of the Stara Planina Mountain in east Serbia and west Bulgaria. The Lower Jurassic started with continental and continental-marine sediments (clays and sandstones) (Lukanja clastics and Lukanja coal beds in Serbia and the Tuden Formation in Bulgaria) and continue with Lukanja quartz sandstones (Serbia) and the Kostina Formation (Bulgaria). These sediments are covered by Lukanja brachiopod beds and Lukanja limestones (Serbia) and the Romanov Dol, Ravna and Dolni Loukovit Members of the Ozirovo Formation (Bulgaria) predominantly consist of bioclastic limestones. The sedimentations follow with Lukanja belemnites-gryphaea beds (marls and clayey limestones), which in Bulgaria correspond to the Bukorovtsi Member (also marls and clayey limestones) of the Ozirovo Formation. The Middle Jurassic sedimentation started with black shales with Bossitra alpine. These sediments are individualized in Serbia as Senokos aleurolites and clays and in Bulgaria they are known as the Etropole Formation. In Serbia the section continues with sandstones called Vodenicki sandstones of Bajocian age, known in Bulgaria as the Dobrogled Member of the Polaten Formation. However, in Bulgaria, the age is Upper Bajocian-Lower Bathonian, and it cover the marls of the lower member (Gornobelotintsi Member) of the Bov Formation and is covered by the upper member - alternation of marls and clayey limestones - the Verenitsa Member of the Bov Formation. The Vodenicki sandstones-Dobrogled Member which ended their distribution in the section of Komshtitsa, to the east (in the Gintsi section), they are not represented - build a body of sandstones, a prodelta coming from the west to the east. The Bov Formation corresponds to the Senokos ammonite beds in east Serbia. The upper boundary of the Senokos ammonite beds and of the Bov Formation is sharp. It is covered by grey limestones of the Yavorec Formation in Bulgaria and by the Kamenica limestones in eastern Serbia. They are covered by grey or red nodular/lithoclastic limestones ("ammonitico rosso" type) of the Gintsi Formation in Bulgaria and the Pokrovenik ammonitic (acanthicum) limestones in Serbia. The Jurassic section in the Infra-Getic ended with grey micritic and lithoclastic limestones, which belong to the Rosomac and Rsovci limestones in east Serbia and to the Glozhene Formation in Bulgaria.

Tectonique de la region de Bobbio (Apennin septentrional, Italie)

1963 ◽  
Vol S7-V (3) ◽  
pp. 287-293 ◽  
Author(s):  
Bernard Labesse
Keyword(s):  
Field Work ◽  
Lower Member

Abstract On the basis of field work and the results of recent stratigraphic studies, new interpretations are proposed regarding the orogenic phases which produced the overthrust structures in the Bobbio area, a region where the deeper units, exposed in a fenster, are younger than the surrounding higher units. In the Trebbia valley, proceeding north from Marsaglia, clays of the upper member of the Oligocene Bobbio unit are underlain by almost vertical beds of schistose pelitic clays, and then by sandstones, dipping 80-85 degrees . These two units belong to the macigno, the lower member of the Bobbio unit. It is concluded that the pelitic clay represents the lower of the two beds as there is no indication of their lateral equivalence or of a fault with horizontal separation in the order of 1000 m., a magnitude necessary if the clay were superimposed on the sandstone. The basal deposits of the upper Bobbio member are olistostromal, followed by the true clays. Existence of olistostromal elements suggests major intra-Oligocene movements, responsible for the structure of the macigno member. Limestones of the Penice mountain unit were overthrust on the Bobbio when the olistostromal elements were being deposited. The Arpiselle mountain unit is overthrust on the Penice and is in turn overridden by the Cretaceous Helminthoides flysch.

Early Cretaceous cyclostome bryozoans from the early to middle Albian of the Glen Rose and Walnut formations of Texas, USA

2019 ◽  
Vol 93 (2) ◽  
pp. 244-259
Author(s):  
Silviu O. Martha ◽  
Paul D. Taylor ◽  
William L. Rader
Keyword(s):  
Shallow Water ◽  
Early Cretaceous ◽  
Carbonate Platform ◽  
Lower Member ◽  
Glen Rose Formation ◽  
Bivalve Shells

AbstractThe Glen Rose and Walnut formations of southcentral and northcentral Texas comprise shallow-water carbonates deposited during the late Aptian to middle Albian on a carbonate platform. The formations are famous for their rich fossil faunas. Although bryozoans are absent in late Aptian sediments, they are frequently found encrusting bivalve shells from the early to middle Albian parts of these formations. Here, we describe the cyclostome bryozoan fauna, which includes six species;Stomatoporasp.,Oncousoecia khirarn. sp.,Reptomultisparsa mclemoreaen. sp.,Hyporosopora keeran. sp.,Mesonopora bernardwalterin. sp., and ?Unicaveasp. Most cyclostomes are found encrusting rudist shells from Unit 2 of the Lower Member of the Glen Rose Formation and units 3 and 6 of the Upper Member of the Glen Rose Formation.UUID:http://zoobank.org/4380dcb5-63b2-4aa9-959c-09eb6b03831f

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