Steady late quaternary slip rate on the Cinarcik section of the North Anatolian fault near Istanbul, Turkey

The distribution of plate motion between multiple fault strands and how this distribution may evolve remain poorly understood, despite the key implications for seismic hazards. The North Anatolian Fault in northwest Turkey is a prime example of a multistranded continental transform. Here we present the first constraints on late Quaternary slip rates on its northern branch across the Cinarcik Basin in the eastern Marmara Sea. We use both deep penetration and high‐resolution multichannel seismic reflection data with a stratigraphic age model to show that a depocenter has persisted near the fault bend responsible for that transform basin. Successively older depocenters have been transported westward by fault motion relative to Eurasia, indicating a uniform right‐lateral slip rate of 18.5 mm/yr over the last 500,000 years, compared to overall GPS rates (23–24 mm/yr). Thus, the northern branch has slipped at a nearly constant rate and has accounted for most of the relative plate motion between Eurasia and Anatolia since ~0.5 Ma

Investigation of the sediment pollution in Izmir Bay: trace elements

The pollution of Izmir Bay was investigated by measuring the trace elements of the surface sediments. The sediment samples were collected from 100 locations in Izmir Bay, five rivers and five sewer outfalls. The collected samples were acid digested and analyzed by flame atomic absorption spectrometry (FAAS), flame atomic emission spectrometry (FAES), graphite furnace atomic absorption spectrometry (GFAAS) and X-ray fluorescence spectrometry (XRF) for a total of 16 trace elements. Selected samples were also analyzed by instrumental neutron activation analysis (INAA) for 39 additional elements. The AAS, XRF and INAA techniques agreed fairly well for most of the elements studied. The concentrations of elements showed significant differences between inner, middle and outer bays with higher concentrations in the inner bay. The distributions of the crustal enrichment factors were also prepared and investigated

Investigation of the sediment pollution in Izmir Bay: trace elements

XXXIth Colloquium Spectroscopicum Internationale -- SEP, 1999 -- ANKARA, TURKEYWOS: 000088353100044The pollution of Izmir Bay was investigated by measuring the trace elements of the surface sediments. The sediment samples were collected from 100 locations in Izmir Bay, five rivers and five sewer outfalls. The collected samples were acid digested and analyzed by flame atomic absorption spectrometry (FAAS), flame atomic emission spectrometry (FAES), graphite furnace atomic absorption spectrometry (GFAAS) and X-ray fluorescence spectrometry (XRF) for a total of 16 trace elements. Selected samples were also analyzed by instrumental neutron activation analysis (INAA) for 39 additional elements. The AAS, XRF and INAA techniques agreed fairly well for most of the elements studied. The concentrations of elements showed significant differences between inner, middle and outer bays with higher concentrations in the inner bay. The distributions of the crustal enrichment factors were also prepared and investigated. (C) 2000 Elsevier Science B.V. All rights reserved