Complex sentence: Some of these stalactites were also off-vertical by 5 ˚ in a consistent orientation, thus indicating that there had also been some past geological shift and tilting of the underlying plateau, followed by a long period in the current plane.
Split into simpler sentences: Some of these stalactites were also off-vertical by 5 ˚ in a consistent orientation. Indicating that there had also been some past geological shift and tilting of the underlying plateau, followed by a long period in the current plane.