The Laird Sandstone Seen best in exposures on Kehoe Beach , the Laird Sandstone was likely a sandy, near shore or beach deposit, sometimes fossiliferous, that marks the return of the sea onto the Pt. There is are boulder conglomerate and abundant barnacle fragments in the basal member of the unit.
Fossiliferous units are more well cemented and resistant to erosion.
Between the formation of the Pt. Reyes Conglomerate and the Laird Sandstone, Pt Reyes likely experienced a prolonged period of elevation and erosion. Rests nonconformably on the granodiorite and granite of Inverness Ridge and on the tonalite of Tomales Point. As much as 64 m thick at Kehoe Beach, this sandstone unit thins to the east to less than 12 m near Lairds Landing on Tomales Bay.