obtaining a Gamma ray (GR) log dataset, wherein the GR log dataset comprises values for a plurality of wells in an area of interest;

determining a geological time period corresponding to a depth in the GR log dataset;

determining, using a computer processor, a spectrum of Earth's orbital parameters corresponding to the geological time period, wherein the spectrum of Earth's orbital parameters comprises parameters for eccentricity, obliquity, and precession;

determining, using the computer processor, peak frequencies of the spectrum of Earth's orbital parameters;

determining a quantity of orbital cycles per well in the area of interest, wherein the orbital cycles are reflected as sedimentary patterns in a geologic record;

determining, using the computer processor, a presence of stratigraphic traps, based, at least in part, on differences in quantities of Earth's orbital cycles between one or more wells in the area of interest;

planning a wellbore trajectory to penetrate an accumulation of hydrocarbons, based, at least in part, on the presence of one or more stratigraphic traps; and

drilling a wellbore according to the wellbore trajectory;

wherein determining the quantity of orbital cycles for each well in the area of interest comprises dividing the geological time period by a quantity of years per orbital cycle;

wherein determining a presence of stratigraphic traps further comprises: