* Weathering and Erosion: Limestone is more susceptible to chemical weathering, particularly dissolution by acidic rainwater. This process creates caves, sinkholes, and other features that weaken the rock. Granite, on the other hand, is more resistant to weathering and erosion, primarily breaking down through physical processes like frost wedging.
* Joint Formation: Limestone often develops a network of fractures called joints, which are pathways for water infiltration and weathering. Granite also has joints, but they tend to be less prominent and less widespread.
* Solubility: Limestone is composed primarily of calcium carbonate, which is soluble in acidic water. This solubility allows water to penetrate the rock and carve out larger features over time. Granite, being composed of quartz and feldspar, is much less soluble.
Therefore, the combination of chemical weathering, joint formation, and solubility makes limestone more prone to forming longer tors than granite.
Tors are distinctive rock formations that are often found on upland plateaus or hills. They are typically formed by the erosion of resistant rock, leaving behind isolated, often conical or dome-shaped structures.
