Supporting Material Botswana Karoo for Bordy (2020) Geol Journal DOI:10.1002/gj.3751

<b>Borehole A–P. </b>Detailed sedimentary logs measured in the sixteen Karoo borehole cores in the Orapa area. of central Botswana. The logs document the following properties of the sedimentary facies: lithology, bed thickness, nature of the bedding contact (gradational, sharp or erosional), grain size variations in bed, sedimentary structures, colour, macroscopic carbonaceous content, and bioturbation structures (invertebrate trace fossils and rootlets). Each bed was assigned a facies code based on grain size and sedimentary structures (Miall, 1996). <br> <b>CORE PHOTOS BOREHOLE A–P. </b>Core photographs of the sixteen borehole cores in the Orapa area. Core box numbers are recorded at the relevant interval in the sedimentary logs (see above). <br><b>SM TABLE 1</b>. Summary of the lithological characteristics of the formally accepted lithostratigraphic units in the Lower Karoo Supergroup in the southeastern area of the Central Kalahari Sub-basin and northeast Botswana (tables are based on Smith, 1984). U = unconformable; C = conformable.<br><b>SM FIGURE 1 </b>Palaeocurrent rose diagrams derived from foresets measurements of cross-bedded strata in the Kamotaka and Morupule formations. <br><b>SM FIGURE 2 </b>Variations in lithology (<b>a–d)</b> and sandstone grain size (<b>e–h</b>) in the Ecca Group formations in the boreholes in the Orapa area. Values are in percentages. Note that claystone, siltstone, coaly mudstone, carbonaceous mudstones as well as coal are undifferentiated and listed under mudstone.<br>

**钻孔A–P**：博茨瓦纳中部奥帕拉（Orapa）地区16个卡鲁（Karoo）钻孔岩芯的沉积测井详细数据。本次测井记录了沉积相的以下参数：岩性、岩层厚度、层理接触性质（渐变型、突变型或侵蚀型）、岩层内粒度变化、沉积构造、颜色、宏观含碳质组分以及生物扰动构造（无脊椎动物遗迹化石与细根）。所有岩层均依据粒度与沉积构造赋予相代码（Miall, 1996）。
**钻孔A–P岩芯照片**：奥帕拉地区16个钻孔岩芯的实拍照片，岩芯盒编号已记录于沉积测井的对应层段（详见上文）。
**补充材料表1**：博茨瓦纳东北部及喀拉哈里次盆地中部东南部区域下卡鲁超群正式厘定的岩石地层单元岩性特征汇总（表格基于Smith, 1984）。其中U代表不整合接触，C代表整合接触。
**补充材料图1**：基于卡莫塔卡（Kamotaka）组与莫鲁普勒（Morupule）组交错层理地层前积层测量得到的古流向玫瑰图。
**补充材料图2**：奥帕拉地区钻孔中埃卡（Ecca）组地层的岩性（a–d）与砂岩粒度（e–h）变化情况，数值以百分比计。需注意：粘土岩、粉砂岩、煤质泥岩、碳质泥岩及煤均未细分，统一归为泥岩。