Oh lordie it is,
First little volcanic blips breaking through the ocean started forming ~ sliding about the surface of the globe bumping into each other once in a while and uniting.
This more massive crashing together, initiated subduction and the formation of more volcanoes and land formation, sliding around, still bumping in other blobs floating about the globe. A self feeding process of growth, all driven by that hot molten, pressurized, middle Earth ocean.
Then, way later in the show, when life appeared on Earth, that started creating organic matter to add to the rocky matter. This organic flux joined the subduction & volcanic dance, to create all sorts of new materials and gases, of never before seen compositions of material, which in turn joined the party. As this blue jewel rotates around its axis revolving around the sun. And then came us.