ummm as I understand it, Lawrence only wrote two books of his own, Seven Pillars and The Mint. I've read both, the former three or four times over the years. It's a masterpiece of English literature and also a fascinating historical narrative. The movie, Lawrence of Arabia, based on this book is an excellent flick, too.
Oddly, I hadn't noticed the focus on the geology, but then I do have a considerable interest in this field. Seven Pillars describes a journey along the Arabian coast of the Red Sea through the Hejaz Mountains (pic related), among the grandest and rugged terrain on the planet and for an Englishman accustomed to the rolling green hills speckled with sheep, it's hardly surprising they caught his eye.
The Mint is a diary of his later years when he suffered PTS (I guess they'd call it nowadays) and enlisted in the airforce under a pseudonym to escape social pressures. It's a psychological study really of a state of mind within a regimented order. Interesting, but nothing great as is Seven Pillars.