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Chari River valley

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Journal Article
Published: 01 January 2006
Journal of the Geological Society (2006) 163 (1): 185–204.
...Francis H. Brown; Bereket Haileab; Ian McDougall Abstract This paper describes a sequence of tuffs between the KBS and the Chari Tuff of Omo Group formations in Kenya and Ethiopia. These tuffs have recently been shown to be 1.87 ± 0.02 Ma and 1.38 ± 0.03 Ma in age, respectively. The sequence...
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Journal Article
Published: 01 October 2015
Russ. Geol. Geophys. (2015) 56 (10): 1475–1483.
...A.M. Korzhenkov; S.V. Abdieva; A.B. Fortuna; T.A. Charimov; A.S. Yudakhin Abstract Moraines studied in the Chon-Kyzylsuu River valley (southeastern Lake Issyk-Kul region, Tien Shan) were mobilized during historic and prehistoric large earthquakes. Seismic triggers of moraine mobilization included...
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Journal Article
Published: 01 July 2016
Russ. Geol. Geophys. (2016) 57 (7): 1090–1098.
..., where rivers flow across the adyr mountains, and west of the Ak-Terek valley. In the latter case, it is the so called “wind gap”, an antecedent segment of the Ak-Terek valley remaining after the uplift (the present Duvan pass), with Middle Pleistocene alluvial deposits (Korjenkov et al., 2006b...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP297.14
EISBN: 9781862395459
.... Fig. 10. MORB-normalized ( Pearce 1983 ) trace element patterns for representative basalts (◊) and rhyolites (+) of the Ait Saoun area, compared with continental tholeiitic basalts from Lesotho (▪) and the Sabie River (•), South Africa (after Marsh 1987 ), and alkaline basalt from Boho Jbel...
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Journal Article
Published: 01 January 2006
Journal of the Geological Society (2006) 163 (1): 205–220.
... the Chari Tuff is particularly notable for its wealth of hominid fossils and archaeological sites. Silicic tuffaceous horizons have provided the basis for stratigraphic subdivision and correlation. Pumice clasts within the tuffs contain anorthoclase phenocrysts, ideal for 40 Ar/ 39 Ar single-crystal dating...
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Journal Article
Published: 01 January 1984
Bulletin de la Société Géologique de France (1984) S7-XXVI (6): 1305–1318.
...Daniel Dubois; Michel Icole; Jean Trichet GeoRef, Copyright 2013, American Geosciences Institute. 1984 Africa Cenozoic Chari River valley deltas erosion features fluvial features landform evolution Maradi River valley mass movements neotectonics Niamey Niger Niger Niger Valley...
Journal Article
Published: 01 December 2006
Journal of the Geological Society (2006) 163 (6): 905–921.
... Lake Chad. It fluctuated in size in response to the precessional cycle and at times overflowed to the east, NE or north, giving rise to the Sahabi rivers. The Eosahabi flowed during the drawdown of the Mediterranean (late Messinian) and eroded the Erdi and part of the East Tibesti Valley. The post-rift...
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Journal Article
Journal: PALAIOS
Published: 01 August 2005
PALAIOS (2005) 20 (4): 321–347.
... geologic time provides valuable evidence to understand colonization of marginal-marine environments through the Phanerozoic, and allows for calibration of ichnologic models that may aid in the recognition of estuarine valley-fill deposits in the stratigraphic record. Virtually all Precambrian...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1933
AAPG Bulletin (1933) 17 (12): 1459–1491.
...L. P. Teas; Charis R. Miller ABSTRACT The Raccoon Bend oil field, located on the west side of Brazos River, Austin County, Texas, was discovered in 1928. There is little definite geophysical or surface geological evidence of this marked structural feature, although gas, sulphur water, and pyrite...
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Series: AAPG Computer Applications in Geology, AAPG Computer Applications in Geology
Published: 01 January 2006
DOI: 10.1306/1063818CA53237
EISBN: 9781629810362
... is approximately 15 ft (4 m). Figure 4. Low-flight aerial photograph of the Chari River, Africa. The river is flowing from the lower right to the upper left area of the photograph, and the width of the river is approximately 3500 feet (1.0 km). Note the general downstream accretion of midchannel bars...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 1974
AAPG Bulletin (1974) 58 (6): 1025–1030.
..., are separated from the Sudanese Nubian outcrops by the ridge of basement outcrop along the Congo-Chad and Nile River divide ( Fig. 1 ). One of the most extensive formations in Sudan, and one of the prime sources of underground water, the Nubian Sandstone Formation, extends over about one third...
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Journal Article
Published: 01 May 2001
Seismological Research Letters (2001) 72 (3): 328–335.
... alluvium. One example is the Narmada River Valley in the province of Madhya Pradesh, where MMI values up to VI were reached at distances of over 600 km. Significant site effects were also observed within Mumbai (Bombay). Most of the city experienced shaking at the MMI V level, but intensities of VI-VII...
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Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2011
DOI: 10.2110/pec.11.98.0089
EISBN: 9781565762916
...), and endorheic (e.g., Cooper Creek and Chari rivers) drainage originating from remote and wetter climatic belts, to more direct input from the immediate basin margins, either as alluvial fans originating from small, steep catchments or large fluvial systems originating from larger catchments capable...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1990
AAPG Bulletin (1990) 74 (10B): 201–239.
... relinquished Blocks A and C covering a total of 76,545 km 2 . In addition, Mobil signed an exploration contract covering the 39,707-km 2 Block E in the mid-Zambezi River valley. No geophysical activity was reported, and no exploratory drilling was performed during 1989. Table 1. Central...
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Journal Article
Published: 01 March 2012
Journal of the Geological Society (2012) 169 (2): 213–226.
... material deposited in the basin was brought in by the Omo River, which drains part of the Ethiopian highlands. The basin extends at least 350 km north–south and up to 90 km east–west ( Fig. 1 ). It lies within the East African Rift system where the NNE–SSW-trending Ethiopian Rift intersects the north–south...
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Journal Article
Journal: Interpretation
Published: 26 October 2020
Interpretation (2020) 8 (4): T981–T990.
... of rare earth elements (REEs) in the Shengli River oil shale, northern Tibet, China : Chemie der Erde-Geochemistry , 71 , 21 – 30 , doi: http://dx.doi.org/10.1016/j.chemer.2010.07.003 . Gao H. He M. Zhao P. Dou L. Wang C. , 2018 , Comparison of geological characteristics...
Journal Article
Published: 30 April 2018
Quarterly Journal of Engineering Geology and Hydrogeology (2018) 51 (3): 338–351.
... and the KMF. The area between the two domal structures is occupied by the valley of the Kaswati River, which follows the trend of the transverse faults (F 18 , F 10 and F 11 ) and a sharp change in the river course is along the left lateral transverse faults (F 1 , F 2 , F 3 , F 4 ). In the southeastern...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1984
AAPG Bulletin (1984) 68 (10): 1523–1599.
... during the year. Pitangueira-1 was drilled northeast of Marina-1 and near the channel of the Zaire River. According to Sonangol, the well reached the Iabe Formation, but is believed to have been completed in the Eocene. Reportedly, 4,500 b/d of 40° oil was recovered on tests. Agip’s second well...
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Journal Article
Published: 01 May 2007
Petroleum Geoscience (2007) 13 (2): 181–191.
... – 62 Geologists’ Association of Tamil Nadu , Madras . Narasimha Chari , M.V. , Sahu , J.N. , Banerjee , B. , Zutschi , P.L. , Kuldeep ChandraEvolution of the Cauvery Basin, India from subsidence modeling . Marine and Petroleum Geology , 12 1995 . 667 – 675...
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Journal Article
Published: 01 November 2011
Proceedings of the Yorkshire Geological Society (2011) 58 (4): 227–246.
... graptoloids with a Pattern H proximal development; Mitchell 1987 ) during the Hirnantian Stage (it is appropriate to note that a few Ordovician members of this clade have recently been assigned to the genus Neodiplograptus Legrand, e.g. N . charis reported by Chen et al . 2005 b and Mitchell et al...
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