> Just like a marble slab will bend over time (see benches in old graveyards that sag in the middle), the mantle slowly flows I had to see more of this, and it

> Just like a marble slab will bend over time (see benches in old graveyards that sag in the middle), the mantle slowly flows I had to see more of this, and it took me a while because most results are about construction and marble products. It looks like thin slabs of marble bow because of microfractures and internal stress, not by flowing. https://link.springer.com/article/10.1007/s00254-008-1307-z https://link.springer.com/article/10.1007/s00254-008-1307-z