Evidence from sedimentation rates and stratigraphic ranges of palynomorph species indicate that van Veen is incorrect in inferring a condensed section at the Triassic/Jurassic (TR / J ) boundary in the Newark Supergroup. Van Veen bases his argument entirely on the ranges of palynomorph species in western Europe, but correlation of the European sections is equivocal, and the range data employed ...

Background and Purpose: The contamination by potentially toxic element (PTE) is a common environmental issue in worldwide rivers. The present study examined PTEs concentration in sediments of Talar River which is one of the main rivers in the Sothern Caspian Basin. Materials and Methods: The sediment samples (n= 44) were collected from top 0–5 cm of surface sediment in the main channel and flo...

Abstract The West Banjir Kanal (WBK) River in Semarang City is a river that plays an important role supporting the various needs of people City. Land use around and utilization WBK water, cause water to be contaminated with heavy metals, which have potential accumulate sediments. This study was conducted analyze compare results analysis metal enrichment factors Cd, Cr, Cu, Pb, Zn sediments rive...

Abstract Biological Traits Analysis (BTA) was used to investigate the functional structure of marine macrobenthic communities along Samsun Shelf Area (SSA). Benthic samples were collected seasonally from five different locations and at four depths using a Van Veen grab sampler. Macrofaunal distributed in SSA assessed 10 biological traits identify characteristic for each depth location. It found...

Sungai Brangkal ialah sungai yang termasuk kedalam Kabupaten Mojokerto bermula dari desa Miji sampai Kauman hingga ke Brantas. Di bantaran ditemukan sampah terbungkus plastik dan menumpuk, selain itu pabrik-pabrik di sekitar membuang limbah sehingga menurunkan kualitas perairan. Penelitian ini bertujuan untuk menganalis perairan Mojokerto. Metode digunakan yaitu observasi dengan 3 stasiun, peng...

The Gorgan Bay is an important ecosystem receiving discharge from their tributaries. In this study, concentration of Pb, Zn, Ni, Fe, Al, Cu and As was seasonally determined at 22 sampling points during 2012-2013.Sediment samples were collected using a Van Veen grab. The levels of heavy metals were determined by ICP-AES (Inductively Coupled Plasma Atomic Emission Spectrometry) and AAS (Atomic Ab...