Determining lateral offsets of rocks along the eastern part of the North Anatolian Fault Zone (Turkey) using spectral classification of satellite images and field measurements

Gürsoy, Önder; Kaya, Ş.; Çakır, Ziyadin; Tatar, Orhan; Canbaz, Oktay

doi:10.1080/19475705.2017.1318794

Cited by 11 publications

(6 citation statements)

References 55 publications

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“…Active faulting can also laterally displace catchments, affecting the spatial distribution of knickzones and hence the spatial planform of calculated uplift histories. However, estimates of the cumulative offset across the North Anatolian Fault, the dominant tectonic structure, range between 50 and 110 km (Akbayram et al, ; Gürsoy et al, ; Hubert‐Ferrari et al, ). These estimates are small compared to the length scales of regional uplift resolved by inverse modeling.…”

Section: Inverse Modeling Of River Profilesmentioning

confidence: 99%

Neogene Uplift and Magmatism of Anatolia: Insights From Drainage Analysis and Basaltic Geochemistry

McNab

Ball

Hoggard

et al. 2018

Geochem Geophys Geosyst

102

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It is agreed that mantle dynamics have played a role in generating and maintaining the elevated topography of Anatolia during Neogene times. However, there is debate about the relative importance of subduction zone and asthenospheric processes. Key issues concern onset and cause of regional uplift, thickness of the lithospheric plate, and the presence/absence of temperature and/or compositional anomalies within the convecting mantle. Here, we tackle these interlinked issues by analyzing and modeling two disparate suites of observations. First, a drainage inventory of 1,844 longitudinal river profiles is assembled. This database is inverted to calculate the variation of Neogene regional uplift through time and space by minimizing the misfit between observed and calculated river profiles subject to independent calibration. Our results suggest that regional uplift commenced at 20 Ma in the east and propagated westward. Second, we have assembled a database of geochemical analyses of basaltic rocks. Two different approaches have been used to quantitatively model this database with a view to determining the depth and degree of asthenospheric melting across Anatolia. Our results suggest that melting occurs at depths as shallow as 60 km in the presence of mantle potential temperatures as high as 1400°C. There is evidence that temperatures are higher in the east, consistent with the pattern of subplate shear wave velocity anomalies. Our combined results are consistent with isostatic and admittance analyses and suggest that elevated asthenospheric temperatures beneath thinned Anatolian lithosphere have played a first‐order role in generating and maintaining regional dynamic topography and basaltic magmatism.

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Section: Inverse Modeling Of River Profilesmentioning

confidence: 99%

Neogene Uplift and Magmatism of Anatolia: Insights From Drainage Analysis and Basaltic Geochemistry

McNab

Ball

Hoggard

et al. 2018

Geochem Geophys Geosyst

102

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“…The spectoradiometer measurements within the wavelenght range of of 350-2500 nm were resampled to spectral region ASTER SWIR bands to be used as endmember (Fig 2). It is necessary to correct the sensor properties for the known crosstalk error, and this is also the initial processing of the Aster image [21]. Operations such as crosstalk adjustment, radiance calibration and reflectance transformation are included in the applications of imaging spectrometry analysis to improve utility of atmospheric correction.…”

Section: Materials and Methodologymentioning

confidence: 99%

Spectral Classification in Lithological Mapping; A Case Study of Matched Filtering

Gürsoy¹,

Canbaz²,

Gökçe³

et al. 2017

Cumhuriyet Science Journal

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In recent years, a large number of studies have been carried out on determining geological characteristics using remote sensing studies and their usefulness. The integrating satellite images and terrestrial spectral data are used distinguishing lithologies in geological units. The use of remote sensing images helps to save time and to reduce the cost of mapping works. In this study, the usability of ASTER SWIR images in distinguishing rock types and in determination of contacts between lithological units in Kösedağ area between Zara and Suşehri towns of Sivas Province. Syenitic, andesitic, basaltic and ophiolitics rocks are cropt out in this area. Spectral signatures of the representative samples from these rock types were measured via ASD spectroradiometer. The signatures were resampled to ASTER SWIR bandwidth as end member. Matched filtering method was performed on the images for spectral classification. The results showed that distinguishing of the mentioned rock types is possible and the boundaries between rock types on the spectral images are mostly coincided with the boundaries on the 1:100.000 scale geological map of the study area.

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“…Ana bileşenler yönteminde olduğu gibi dekorelasyon gerilmesi, yüksek korelasyona sahip çok bantlı görüntülerde renk zenginleştirmesi yapan bir yöntemdir. Renklerde meydana gelen yoğunlaşma ile görsel yorumlanabilirliğin artırılmasını sağlamaktadır [33,34]. Bu çalışma kapsamında, ASTER uydusunun SWIR bantlarından en düşük korelasyona sahip 9-7-4 nolu bantlarına dekorelasyon gerilmesi uygulanmıştır.…”

Section: Dekorelasyon Gerilmesiunclassified

Determination of Hydrothermal Alteration Areas by Aster Satellite Images: Ağmaşat Plato- Zara (Sivas) / Turkey Sample

Canbaz¹,

Gürsoy²,

Gökçe³

2017

Cumhuriyet Science Journal

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Hidrotermal alterasyon alanlarının tespiti, maden arama faaliyetlerinin ilk aşamalarından bir tanesi olup özellikle porfiri tip zenginleşmelerin keşfinde önemli bir adımı oluşturmaktadır. Önceleri arazi çalışmaları ve gözlemlerle tespit edilebilen bu tür alanlar artık günümüzde gelişen teknoloji ile birlikte uydulardan elde edilen görüntüler üzerinde yapılan işlemlerle tespit edilebilmektedir. Bu çalışmada Sivas ilinin Zara ilçesinin kuzeyinde Ağmaşat Yaylası'nda belirlenen hidrotermal alterasyon alanlarının ve çevre jeolojik birimlerinin sınırları ASTER uydusu SWIR görüntüleri ile belirlenmeye çalışılmıştır. Uygulanan dekorelasyon gerilmesi ve ana bileşenler dönüşümü metodları ile elde edilen veriler, arazi çalışmaları sırasında hazırlanan jeoloji haritası ile yüksek oranda örtüştüğü belirlenmiştir. Bu veriler ışığında tespit edilebilecek yeni alterasyon alanları potansiyel maden sahası olarak değerlendirilebilecektir.

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Determining lateral offsets of rocks along the eastern part of the North Anatolian Fault Zone (Turkey) using spectral classification of satellite images and field measurements

Abstract: View related articlesView Crossmark data Citing articles: 2 View citing articlesDetermining lateral offsets of rocks along the eastern part of the North Anatolian Fault Zone (Turkey) using spectral classification of satellite images and field measurements

Cited by 11 publications

References 55 publications

Neogene Uplift and Magmatism of Anatolia: Insights From Drainage Analysis and Basaltic Geochemistry

Neogene Uplift and Magmatism of Anatolia: Insights From Drainage Analysis and Basaltic Geochemistry

Spectral Classification in Lithological Mapping; A Case Study of Matched Filtering

Determination of Hydrothermal Alteration Areas by Aster Satellite Images: Ağmaşat Plato- Zara (Sivas) / Turkey Sample

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