scholarly journals A Study on Geomorphological difference Between Beach and Tidal sand flat

2017 ◽  
Vol 27 (3) ◽  
pp. 147-164
Author(s):  
JEONG, Su Ho ◽  
Mu-Il Han
Keyword(s):  
Sand Flat ◽  
Tidal Sand

scholarly journals Preliminary report on a food web in a tidal sand flat, with special reference to a subweb centering around a sand snail, Umbonium (Suchium) monilifarum.

1980 ◽  
pp. 71-80 ◽  
Author(s):  
Satoshi NOJIMA ◽  
Yoshiro KITAJIMA ◽  
Yasuhisa KUWAHARA ◽  
Seiya MIYAMOTO ◽  
Sakuji FURUNISHI
Keyword(s):  
Special Reference ◽  
Food Web ◽  
Preliminary Report ◽  
Sand Flat ◽  
Tidal Sand

scholarly journals Desulfopila inferna sp. nov., a sulfate-reducing bacterium isolated from the subsurface of a tidal sand-flat

2010 ◽  
Vol 60 (7) ◽  
pp. 1626-1630 ◽  
Author(s):  
Antje Gittel ◽  
Michael Seidel ◽  
Jan Kuever ◽  
Alexander S. Galushko ◽  
Heribert Cypionka ◽  
...  
Keyword(s):  
Cellular Fatty Acid ◽  
Fatty Acid Analysis ◽  
Rrna Gene ◽  
Sand Flat ◽  
Sulfate Reducing ◽  
Branched Chain Fatty Acids ◽  
Gene Sequence Analysis ◽  
Bacterium Strain ◽  
Tidal Sand ◽  
Branched Chain

A Gram-negative, rod-shaped, sulfate-reducing bacterium (strain JS_SRB250LacT) was isolated from a tidal sand-flat in the German Wadden Sea. 16S rRNA gene sequence analysis showed that strain JS_SRB250LacT belonged to the Desulfobulbaceae (Deltaproteobacteria), with Desulfopila aestuarii MSL86T being the closest recognized relative (94.2 % similarity). Higher similarity (96.6 %) was shared with ‘Desulfobacterium corrodens’ IS4, but this name has not been validly published. The affiliation of strain JS_SRB250LacT to the genus Desulfopila was further supported by analysis of aprBA gene sequences and shared physiological characteristics, in particular the broad range of organic electron donors used for sulfate reduction. Compared with Desulfopila aestuarii MSL86T, strain JS_SRB250LacT additionally utilized butyrate and succinate and grew chemolithoautotrophically with hydrogen as an electron donor. CO dehydrogenase activity was demonstrated, indicating that the reductive acetyl-CoA pathway (Wood–Ljungdahl pathway) was used for CO2 fixation. Results of cellular fatty acid analysis allowed chemotaxonomic differentiation of strain JS_SRB250LacT from Desulfopila aestuarii MSL86T by the presence of C17 : 0 cyclo and the absence of hydroxy and unsaturated branched-chain fatty acids. Based on phylogenetic, physiological and chemotaxonomic characteristics, strain JS_SRB250LacT represents a novel species of the genus Desulfopila, for which the name Desulfopila inferna sp. nov. is proposed. The type strain is JS_SRB250LacT (=DSM 19738T =NBRC 103921T).

An Upper Mississippian trace-fossil assemblage from the Tar Springs Sandstone, southern Illinois

1987 ◽  
Vol 61 (2) ◽  
pp. 231-241 ◽  
Author(s):  
William A. Wescott ◽  
John E. Utgaard
Keyword(s):  
Tidal Flat ◽  
Trace Fossil ◽  
Southern Illinois ◽  
Sand Flat ◽  
Fossil Assemblage ◽  
Shrinkage Cracks ◽  
Small Channel ◽  
Tidal Sand ◽  
Substrate Stabilization ◽  
Uppermost Portion

A trace-fossil assemblage is exposed in the uppermost portion of an interpreted tidal sand-flat deposit in the Upper Mississippian Tar Springs Sandstone in southwestern Illinois. Sedimentary structures, indicative of a tidal origin for this unit, include herringbone crossbeds, flaser and lenticular beds, reactivation surfaces, small channel scours, and shrinkage cracks. The trace fossils include trackways, trails, feeding structures, dwelling burrows, and escape structures. Vertical dwelling and escape structures dominate the assemblage with lesser numbers of horizontal and inclined traces. The ichnological and sedimentological characteristics are diagnostic of the Skolithos ichnofacies. Preservation of the assemblage at the top of the Tar Springs Sandstone was the result of substrate stabilization as the tidal flat subsided and was transgressed. The present trace-fossil assemblage probably was formed by a combination of a pre-omission tidal-flat suite and an omission suite formed during and after the transgression. Preservation of the assemblage suggests a passive transgression with minimal scouring and reworking of the tidal-flat deposit.

scholarly journals FASIES DAN LINGKUNGAN PENGENDAPAN FORMASI KANIKEH, CEKUNGAN BULA, MALUKU

2020 ◽  
Vol 30 (2) ◽  
pp. 171
Author(s):  
Akhmad Khahlil Gibran ◽  
Aries Kusworo
Keyword(s):  
Source Rock ◽  
Depositional Environment ◽  
Stratigraphic Correlation ◽  
Tidal Channel ◽  
Tidal Channels ◽  
Sand Flat ◽  
Facies Associations ◽  
Tidal Sand ◽  
Siliciclastic Rocks ◽  
Excellent Source

Batuan silisiklastik berumur Trias yaitu Formasi Kanikeh, tersebar di Pulau Seram hingga Pulau Kesui dan Teor dari Maluku hingga Maluku Tenggara. Formasi Kanikeh telah lama dikenal memiliki karakteristik batuan induk yang baik. Pemahaman tentang Formasi Kanikeh masih minim, interpretasi lingkungan pengendapan dan korelasi stratigrafi masih ada perbedaan. Tujuan penelitian ini adalah mendapatkan hasil interpretasi lingkungan pengendapan berdasarkan data terbaru. Metode yang digunakan dalam penelitian ini adalah pengukuran penampang stratigrafi pada empat lintasan pengamatan di daerah Seram Bagian Timur dengan menggunakan pendekatan analisis litofasies dan asosiasi fasies. Hasil dari penelitian ini menunjukkan adanya 9 litofasies, yaitu: Litofasies Batupasir Konglomeratan (Sg); Litofasies Batupasir Lapisan Silangsiur Mangkok (Sp); Litofasies Batupasir Bioturbasi (Sb); Litofasies Batupasir Karbonan (Sc); Litofasies Batupasir Bergelombang (Sw); Litofasies Batupasir Flasser (Sf); Litofasies Batupasir Laminasi Sejajar (Sh); Litofasies Batulumpur Lenticular (Fl); Litofasies Batulumpur Berlapis (Fsc). Deskripsi litofasies tersebut termasuk ke dalam suatu sistem pengendapan pasang-surut (intertidal) yaitu tidal channel, tidal sand flat, tidal sand-mud mixed flat, dan tidal mudflat. Formasi Kanikeh terendapkan dengan sistem pengendapan batuan silisiklastik yang dipengaruhi oleh arus pasang-surut pada lingkungan pengendapan transisi. ABSTRACT - Facies and depositional environment of Kanikeh Formation, Bula Basin, Maluku. The Triassic siliciclastic rocks, Kanikeh Formation are spread across Seram, Kesui, and Teor Island from Molucca to Southeast Molucca. The Kanikeh formation has been known as an excellent source rock. However, its interpretation of the depositional environment and stratigraphic correlation are still poorly understood. This study aims to give a better understanding of the depositional environment. This study consists of Lithofacies descriptions and facies associations of four stratigraphy measuring sections in Eastern Seram Island. The results of this study indicate that there are 9 lithofacies, including conglomeratic sandstone (Sc); Through cross bed sandstone (Sp); Bioturbated sandstone (Sb); Carboniferous sandstone (Sc); Wavy Sandstone (Sw); Flasser Sandstone (Sf); parallel laminated sandstone (Sh); lenticular mudstone (Fl); dan laminated mudstone (Fsc). The lithofacies description is included in four facies associations which are included in a tidal deposition system (intertidal) there are tidal channels, tidal sand flat, tidal sand-mud mixed flat, dan tidal mudflat. Based on the results Kanikeh Formation is deposited with a siliciclastic deposition system influenced by tidal currents within transition deposition environments.

Sign in / Sign up

Export Citation Format

Share Document