Perhaps you mean Hadean, when the planets of the solar system were just forming out of dust and particles. There were no solid rocks or anything yet, so you could hardly call it geologic.
The thing about gravity is that if two specks of dust are drifting around the sun alongside each other, they are pulled together by their own gravitational fields. The more particles get pulled together, the bigger the particles and the bigger the forces. Eventually the particles look more like a cloud than individual particles, then a few million years later you have something that is liquid, or perhaps solid. (I NEED HELP ASAP!!!)
What is your question?
Based on your description, it seems like you are referring to the early stages of the formation of the planets in the solar system. During this time, which is called the Hadean Eon, the celestial bodies in the solar system were still in the process of forming from dust and particles. At this stage, the materials were not yet solid rocks, so it was not yet geologic in nature.
The formation of planets, including the Earth, starts with the aggregation of particles due to the force of gravity. As you mentioned, two specks of dust drifting around the sun alongside each other would be pulled together by their own gravitational fields. Over time, more and more particles get pulled together, leading to the formation of larger masses. As particles and materials accumulate, they start to resemble a cloud-like structure rather than individual particles.
Over millions of years, through processes such as accretion and collision, these accumulating particles begin to form larger bodies, eventually leading to the formation of planets. During this process, the materials can transition from being in a gaseous state to a liquid state and eventually solidify into rock-like structures. These early solid or liquid forms of the planets are the building blocks of the geological history of celestial bodies.
If you need further assistance or have a specific question, feel free to ask for more help.