Figure 18. Comparison of independent paleomagnetic studies at two nearby sections in type area of Ojo Alamo Sandstone in southwestern San Juan Basin (see Figure 4 for locations); the two localities are 9 km apart; modified from Lindsay et al. 1981. The two sections are aligned on top of chron C33n and base of chron C29n. Chron labels on Lindsay et al. 1981 figure are corrected from their original designations as discussed in section of this paper headed "Identification of Kirtland Formation-Ojo Alamo Sandstone Magnetochrons."