New York soils are mostly composed of rock particles derived from the Appalachian Mountains. These mountains, which are to the west of the state, have been subjected to millions of years of weathering and erosion, resulting in a vast amount of sediment that has been transported eastward by rivers and glaciers.

Here's a breakdown of the rock types and their contributions:

* Igneous and metamorphic rocks: These are the bedrock of the Appalachian Mountains. They are broken down into smaller particles like sand, silt, and clay through weathering and erosion.

* Glacial till: During the last Ice Age, glaciers moved across New York, grinding and pulverizing the bedrock. This glacial till is a mix of rock fragments of various sizes, from boulders to fine clay.

* Sedimentary rocks: As glaciers retreated, they deposited the till, which then further weathered into smaller particles. Some areas also have deposits of sandstone, shale, and limestone, which are sedimentary rocks formed over time.

Therefore, New York soils are primarily composed of sand, silt, and clay particles derived from igneous, metamorphic, and sedimentary rocks, with a significant contribution from glacial till.

It's important to note: The exact composition of New York soils varies depending on the specific location. Some areas may have a higher proportion of sand, while others might have more clay. This variation is influenced by factors like bedrock type, glacial activity, and local topography.