The Central Lowlands

The Central Lowlands are made up of Triassic, Cretaceous-Tertiary marine and non-marine strata that are bounded in the east by the Easter Highlands and the west by the Western Ranges (Indo-Burma Ranges). They are filled with more than 60,000 ft (2500 m) of Triassic, Cretaceous, Tertiary and Quaternary deposits (Than Nyunt & Chit Saing, 1978) among the Eocene sediments constitute 50% of the Tertiary sequence, with a whole Eocene thickness of 27,700 ft (8445 m) (Aung Khin & Kyaw Win, 1969). The Central Myanmar Block with the Wuntho Salingyi-Mesozoic Arc extending in a north-south direction along its medial axis. There are at least four uplifts and the five basins in the Central Cenozoic Belt. The four uplifts are (from north to south) Kumon ridge uplift, Wuntho mass uplift, Salingyi uplift, Peguyoma uplift. The five Basins are Hukawng Basin, Chindwin Basin, Shwebo Monywa Basin, Minbu Basin, Pathain Basin.

Pre-Albin rocks are intruded by andesite sills, by the early Upper Cretaceous granodioritic Kanza Chaung batholiths and by Tertiary minor intrusions, including those with associated copper deposits at Monywa (Win and Kirwin, 1998). Between Mt Popa and Sagaing Fault only post-Oligocene sediments are exposed.

Tne Inner Burmar Tertiary Basin consists of tow major north-south oriented sedimentary throughs spreaded by a central line of volcanic rocks. The entire fault system is characterized by a Znoe of Basic and ulterbasic igneous of Mesozoic-Cenozoic age. These volcanic belong to the inner volcanic arc, individual occurrences of which can be traced along the entire belt extending for the same distance in a SSW-NNE-N direction in the Inner Tertiary Basin. The arc has been found magnetic and in the seismic reflection survey in the Golf of Martaban, also in the coarse of oil exploratory drilling in the Ayeyarwady Delta Basin. It run vir Mt Popa the volcanic of Shinmataung range, salingyi and the Wuntho Massif through to the eastern border of the Hugaung Basin. The arc is made up of granodioritic, andesitic and basaltic rock of Late Mesozoic to Cenozoic volcanism (Bender, 1983). The Central Myanmar Block with the Wuntho Salingyi-Mesozoic Arc extending in a north-south direction along its medial axis. The Basin are formed north to south Hukawng Basin, Chindwin Basin, Minbu Basin, Ayeyawady Delta Basin, all o force side of Wuntho-Salingyi Magmatic Arce. In the Wuntho –banmauk-Pinlebu Area, the CMB is under lain by pre-Albin andesitic basaltic with pillow stractures, intruded by mid-Cretaceous granodiorite batho-litho, which are exposed discontiously wouth ward along the medial exis of the CMB, form Wuntho-Bamauk are to Salingyi Area southwest of Monywa.

In the Tagaung-Myitkyina belt of northern Myanmar, granodioritic plutons and the Katha-Gangaw Range kyanite-bearing schists may be equilivalents of the Wuntho-Popa Upper cretaceous magmatic arc and Kanpetlet Schists offset on the Sagaing Fault (Mitchell. 1993). The schist dip steeply east beneath the Mogok Metamorphic belt on the Kyaukphyu Fault. North of Singu, the eastern volcanic line makes a curve to the north-east, folloeing Kumon Ranges. 

reference: 

Atlas of Mineral Resources of the Escpe Region Volume 12, 1996