Geological Sedimentary Cross-Section

A vintage-style geological cross-section illustration of sedimentary rock strata, drawn as a classic field geology diagram. The image shows a vertical cliff face cut open to reveal eight horizontal strata layers from bottom to top: dark basalt (black, dashed pattern), red sandstone (brick-red stippled), grey limestone (horizontal ruled lines), brown shale (wavy lines), white chalk (dots), yellow sandstone (sand-grain texture), green mudstone (small x marks), and surface topsoil (warm brown). Annotated with thin leader lines to the right: layer names and approximate ages in millions of years (Ma). A small unconformity (wavy erosion surface) is visible between the limestone and shale layers. Vintage serif font for all labels, warm sepia-toned border, yellowed parchment background. Overall style resembles a 19th-century geological survey plate.

一幅复古风格的沉积地层横截面图，绘制为经典野外地质图。竖直剖面从下到上展示八层岩层：深色玄武岩（黑色虚线纹）、红色砂岩（砖红色点刻）、灰色石灰岩（水平线纹）、棕色页岩（波浪线）、白色白垩（点状）、黄色砂岩（砂粒纹）、绿色泥岩（小 x 标记）、表层土壤（暖棕色）。右侧细线箭头标注各层名称与地质年代（Ma）。石灰岩与页岩间有一道不整合面（波浪侵蚀面）。所有标签使用复古衬线字体，暖棕色边框，泛黄羊皮纸背景，整体风格类似 19 世纪地质调查图版。