Microstructural evidence for the fluid dynamical behaviour in vertically and laterally propagated dykes of the British and Irish Paleogene Igneous Province - grain size data

Grain size data for plagioclase in BIPIP basaltic dykes.

This data was collected as part of a study of the lateral variation in grain size in dykes that propagated laterally for significant distances (up to 300km) through the shallow crust, with a range of bodies sampled both close to their magmatic source on the NW coast of Scotland, and far from their source (in Northumberland).

For each intrusion, a suite of samples was collected across the full width of the body. Plagioclase grain size was measured as the long axis length of every grain intersection in each thin section. In the associated paper, the arithmetic mean of the population of grain sizes in each sample is reported.

本数据集收录了苏格兰西北海岸附近及其远处（至诺森伯兰郡）的BIPIP玄武质岩墙中斜长石颗粒大小的数据。该数据收集于一项研究之中，旨在探究岩墙在浅层地壳中横向延伸（可达300公里）过程中颗粒大小的横向变化。研究范围内，对靠近其岩浆源和远离其源处的多个岩体进行了采样。对于每个侵入体，收集了覆盖整个岩体宽度的样本系列。通过测量每个薄片中的颗粒相交长轴长度，对斜长石颗粒大小进行了测定。在相关论文中，报告了每个样本中颗粒大小群体的算术平均值。