geologyistheway

[geologyistheway]

Metabreccia with a nice collection of clasts of marble, phyllite, and quartzite, flattened by the deformation processes that produced the Northern Apennine belt. I love metabreccias, because they show an endless variety of clasts, colors, and deformation patterns.

Middle Triassic Punta Bianca, La Spezia, Italy

[geologyistheway]

Do what you want ‘cause a pyrite is free! You are a pyrite! 🇬🇧 Large pyrite crystals surrounded by white mica and quartz in a metabreccia. You can actually see them with a reddish rim at PPL because they are altered to a mixture of Fe oxides and hydroxides – known to ordinary mortals as... rust. Anyway, the cubic habit of pyrite is well evident! CPL - PPL 🇮🇹 Grossi cristalli di pirite circondati da mica bianca e quarzo in una metabreccia. Di fatto appaioni circondati da un bordo rossastro a N// perché sono alterati in misture di ossidi e idrossidi di ferro – meglio noti ai comuni mortali come ruggine. Ad ogni modo si vede molto bene l’abito cubico dei cristalli di pirite! NX - N// Width: 3 mm Monte Folgorito, Apuane, Italy

[geologyistheway]

Collage of 15 geologic maps, made by Harold Fisk, showing older meanders of the Lower Mississippi river, 1944. Just click on the Hres link and enjoy: https://i.pinimg.com/originals/80/18/f4/8018f49f687cea17cfa16187aa01073d.jpg

[geologyistheway]

Very cute domino normal faults (or listric faults if you prefer)

2015: Best road cutting in Oz