Chapter 6 A review of the Chemical Index of Alteration (CIA) and its application to the study of Neoproterozoic glacial deposits and climate transitions

H Bahlburg, N Dobrzinski - Geological Society, London, Memoirs, 2011 - lyellcollection.org
Abstract The Chemical Index of Alteration (CIA) is the most accepted of available weathering
indices. Past conditions of physical and chemical weathering can be reliably inferred if …

[HTML][HTML] Facies classification and patterns of lacustrine carbonate deposition of the Barra Velha Formation, Santos Basin, Brazilian Pre-salt

JP Gomes, RB Bunevich, LR Tedeschi… - Marine and Petroleum …, 2020 - Elsevier
The lacustrine carbonate rocks of the giant Pre-salt oil-fields in the Santos and Campos
Basins differ in a number of important aspects from classic lake deposits. Prior work has …

Spatial and temporal distribution of diagenetic alterations in siliciclastic rocks: implications for mass transfer in sedimentary basins

S Morad, JM Ketzer, LF De Ros - Sedimentology, 2000 - Wiley Online Library
The spatial and temporal distribution of diagenetic alterations in siliciclastic sequences is
controlled by a complex array of interrelated parameters that prevail during eodiagenesis …

Fluid‐rock reaction weakening of fault zones

RP Wintsch, R Christoffersen… - Journal of Geophysical …, 1995 - Wiley Online Library
The presence of weak phyllosilicates may explain the low shear strengths of fault zones if
they define well‐developed fabrics. The growth of phyllosilicates is favored in meteoric water …

Processes controlling the distribution of Ti and Al in weathering profiles, siliciclastic sediments and sedimentary rocks

GM Young, HW Nesbitt - Journal of Sedimentary …, 1998 - pubs.geoscienceworld.org
The ratio of Ti to Al varies greatly in primary (igneous) source rocks. These elements are
considered to be relatively immobile in most weathering regimes, so that TiO 2: Al 2 O 3 …

Comparative study of the mobility of major and trace elements during alteration of an andesite and a rhyolite to bentonite, in the islands of Milos and Kimolos, Aegean …

GE Christidis - Clays and Clay minerals, 1998 - cambridge.org
Progressive alteration by seawater of an andesite in the Aegean Island of Milos and an
ignimbrite in the Aegean Island of Kimolos, Greece, formed bentonites with or without …

Mudrock sequence stratigraphy: A multi-proxy (sedimentological, paleobiological and geochemical) approach, Devonian Appalachian Basin

CA Ver Straeten, CE Brett, BB Sageman - Palaeogeography …, 2011 - Elsevier
Delineation of stratigraphic sequences and their component systems tracts in mudrock-
dominated facies is generally difficult due to the relatively homogenous, fine-grained nature …

Smectite-illite-muscovite transformations, quartz dissolution, and silica release in shales

PC van de Kamp - Clays and Clay Minerals, 2008 - cambridge.org
Quantitative analysis of the smectite-to-illite and illite-to-muscovite transformations indicates
that 17–28 wt.% SiO2 and 17–23 wt.% SiO2, respectively, are liberated during these …

Anomalously low Al2O3/TiO2 values for Archean cherts from the Pilbara Block, Western Australia—possible evidence for extensive chemical weathering on the early …

K Sugitani, Y Horiuchi, M Adachi, R Sugisaki - Precambrian Research, 1996 - Elsevier
Geochemical, sedimentological and mineralogical features of 3.0 Ga Archean cherts and
intercalated BIFs from the Pilbara Block, Western Australia, were studied. Chert layers that …

APXS‐derived compositional characteristics of Vera Rubin Ridge and Murray formation, Gale crater, Mars: Geochemical implications for the origin of the ridge

LM Thompson, JA Berger, JG Spray… - Journal of …, 2020 - Wiley Online Library
The resistant~ 50 m thick Vera Rubin ridge (VRR) situated near the base of Mount Sharp,
Gale crater, Mars, has been deemed a high priority science target for the Mars Science …