Geochemical characteristics of Holocene sediments from Chuadanga district, Bangladesh: Implications for weathering, climate, redox conditions, provenance and tectonic setting

Chemical elements as fingerprints of geographical origin in cultivars of Vitis vinifera L. raised on the same SO4 rootstock

“…The oxides Al 2 O 3 and TiO 2 showed positive correlations with SiO 2 (Fig. 2a-c), suggesting the presence of quartz, feldspar, clay minerals, and/or hydroxides (Hossain et al 2014). A high CaO/SiO 2 ratio (Fig.…”

Keban ve Karakaya Barajları arası Fırat Nehri'nin kıyı sedimentleri ve su jeokimyası özellikleri

“…Fırat Nehir sedimanları içerisindeki Al ve Mg konsantrasyonları, bölgesel litolojik birimlerin ayrışması sonucu oluşan, çeşitli bileşimli kil mineralleri ile ilgili olmalıdır. Goldstein ve Jacobsen [20] [43,44]. Bu çalışma kapsamında düşük Ti değerleri (<%1), Ti'ın kimyasal ayrışma süreci içerisinde nispeten diğer elementlere oranla immobil olmasından kaynaklanmış olmalıdır.…”

High-resolution compositional analysis of a fluvial-fan succession: The Miocene infill of the Cacheuta Basin (central Argentinian foreland)

“…Based on the geochemistry of clastic sedimentary rocks, several authors have proposed chemical classification schemes (Hossain et al, 2014, and references therein). One of the most commonly adopted classifications is the log(Na 2 O/K 2 O) vs. log(SiO 2 /Al 2 O 3 ) diagram proposed by Pettijohn et al (1972;Fig.…”

“…CaO* was the one described by Hossain et al (2014) and Ding et al (2015), where CaO*= CaO-(10/3*P 2 O 5 ). According to this approach, if the result is lower than the amount of Na 2 O, the corrected value of CaO* is used in the CIA calculation; on the other hand, if the result is higher than the amount of Na 2 O, the working assumption is that CaO* is equal to Na 2 O (Hossain et al, 2014). The CIA is expressed as a dimensionless number between 0 and 100, the latter representing extreme…”