NEW INFORMATION ON THE AGE AND THERMAL HISTORY OF A PROBABLE EARLY TRIASSIC SILTSTONE NEAR KAKA POINT, SOUTH ISLAND, NEW-ZEALAND

The conodont Neospathodus homeri s.l. supports a late Early Triassic, Malakovian, age for an ammonoid-rich horizon in the Potiki Siltstone, 0.9 km south of Kaka Point, southeast Otago, rather than an alternativ e designation of Early to Middle Anisian. The conodont colour alterati on index suggests a thermal history with temperature not exceeding c. 80 degrees C. The Kaka Point structural belt appears to have had a tec tonic and thermal history different from that of the adjacent Murihiku Terrane.