Massangis Jaune carbonate

The Massangis Jaune variety of the Massangis limestone (France) is an ooid-dominated grainstone containing detrital micrite and bioclasts. Within the bulk of this rock, patches of several cubic centimeters with a different microstructure and a lower porosity occur seemingly randomly (Boone et al., 2014). The bulk, from which the sample used in this work was selected, has a porosity of 11.6% (measured by mercury intrusion porosimetry (MIP) to avoid averaging the porosity of the bulk and the patches) (Boone et al., 2014). It contains interparticular moldic macropores due to dedolomitization. The macropore network may or may not percolate, depending on the local amount of (de)dolomitization. Depending on this, permeability can range from 70 mD (measured by portable permeameter) to values on the order of 0.03 mD. Microporosity can be found in the partially dissolved dolomite lining the molds and in local ooids.法国马桑吉灰岩的马桑吉黄（Massangis Jaune）变种是一种以鲕粒为主的颗粒灰岩，含有碎屑微晶灰岩与生物碎屑。在该岩石的主体中，随机分布着数立方厘米大小的斑块，其微观结构与主体不同且孔隙度更低（Boone et al., 2014）。本研究选取样品所在的岩石基体，其孔隙度为11.6%（采用压汞法（mercury intrusion porosimetry, MIP）测定，以避免平均基体与斑块的孔隙度）（Boone et al., 2014）。该岩石因去白云岩化作用形成粒间铸模大孔隙。该大孔隙网络是否发生渗流，取决于局部（去）白云岩化作用的程度。据此，渗透率可在70毫达西（采用便携式渗透率仪测定）至0.03毫达西量级之间波动。铸模内壁的部分溶蚀白云岩以及局部鲕粒中可见微孔孔隙。

搜集汇总

背景与挑战

背景概述

该数据集聚焦于法国Massangis Jaune碳酸盐岩，这是一种以鲕粒为主的颗粒灰岩，具有11.6%的孔隙度，并包含微孔隙和宏观孔隙网络，渗透性范围从0.03 mD到70 mD。数据集提供微CT扫描和分割数据，支持多尺度孔隙网络建模研究，适用于地质和材料科学领域。