Triassic Latemar cycle tops — Subaerial exposure of platform carbonates under tropical arid climate

Multiscale fracture network characterization and impact on flow: A case study on the Latemar carbonate platform

“…The interior consists of a more than 700 m thick cyclic succession with predominant wacke and packstone alternations [ Egenhoff et al ., ; Preto et al ., ]. The succession is interrupted by three tepee intervals associated with episodes of regional sea level drop [ Egenhoff et al ., ; Christ et al ., ] and which act as baffles that vertically subdivide first‐order flow units [ Whitaker et al ., ]. The isolated platform geometry of the Latemar provides a well‐confined case for addressing fluid flow.…”

“…Platform‐wide mean permeabilities of the three main stratigraphic intervals of the platform margin and interior have been estimated with forward coupled modeling of the sedimentary and diagenetic evolution [ Whitaker et al ., ]. Outcrop observations confirm the first‐order trends of the modeled platform architecture [ Egenhoff et al ., ; Christ et al ., ], sufficient for the model to deliver relevant predictions on diagenetic overprint and matrix permeability evolution. The simulation findings of Whitaker et al .…”

Deciphering the history of hydrologic and climatic changes on carbonate lowstand surfaces: calcrete and organic-matter/evaporite facies association on a palimpsest Middle Jurassic landscape from Portugal

“…Besides their use in deciphering ancient climates, landscapes and ecosystems, they increasingly have a role in improving our understanding of eustasy and cyclostratigraphic problems (e.g. Strasser and Hillgärtner, 1998;Pomoni-Papaioannou and Kostopoulou, 2008;Christ et al, 2012), as low lying carbonate depositional areas can have low surface-erosion rates and may precisely record relative sea level positions (e.g. Miller et al, 2012).…”

Process‐based Modelling of Syn‐depositional Diagenesis

“…However, within cm of the sediment surface organically--matter oxidation can significantly modify the carbonate chemistry of the porewaters, leading to dissolution or precipitation depending on the reactivity of the organics and availability of sulfate and iron (Mackenzie, 2005). Marine hardgrounds have been widely recognized as an important control on later fluid flow (Read & Horbury, 1993;Christ et al, 2012;Shekdar et al, 2014), but the impact of early marine dissolution or stabilization of aragonite has received less attention in the geological literature (Christ et al, 2015).…”