Linex Pty Ltd

Rocks around Bendigo - Heathcote region

A location map will be added to this page.

Last updated 22/6/03


Field trip areas: Bendigo to Heathcote (Axedale, Lake Eppalock)
Areas north and east of Heathcote (Lady's Pass, Mt Ida, Heathcote-Costerfield Rd)
Heathcote township
Tooborac-Puckapunyal Rd

Bendigo to Heathcote

Axedale, flat landscape resulting from an basaltic lava flow 011006_Axedale_Basalts_1.jpg (28398 bytes)

Mount Alexander, granodiorite quarry.  Two types of xenolith (xenolith and autolith) in granodiorite.

011006_Axedale_Basalts_2.jpg (36429 bytes)
Lake Eppalock, Knowsley.  Variety of clasts from within Permian glacials.  Clasts include granite, basalt, rhyolite, sandstone, shale and reef quartz in addition to the large striated boulder on which the keys rest. 011006_Knowsley_striations.JPG (24254 bytes)
Lake Eppalock, Knowsley.  First year geology students (2001) "measuring" the particle size ranges in Permian glacials by the distance they can be thrown 011006_Knowsley_clast_size.JPG (17678 bytes)
Lake Eppalock, Knowsley.  Kellam's rock, a glacial pavement of Ordovician sandstone that was scratched and gouged by debris laden ice during the Permian. Kellams.JPG (67497 bytes)
Lake Eppalock, Knowsley.  Two directions of striations on Kellam's rock. 011006_Knowsley_2_Striations.JPG (9373 bytes)       011006_Knowsley_2_Striations_interp.jpg (10316 bytes)
Lake Eppalock, Knowsley.  Deep grooves gouged into Kellam's rock. 011006_Knowsley_Groove2.JPG (22381 bytes)
Lake Eppalock, Knowsley.  Dunn's rock, glacial pavement. Knowsley_Dunn_Rock.jpg (21319 bytes)
Lake Eppalock, Moorabee point.  Fluvioglacial channels.   The top of the channels are indicated in green, the base of the channels are red.   Blue is a later eroded edge to an existing channel.  The oldest channel is a the bottom of the photo and the youngest towards the top. 011006_Moorabee_Channels_interp.jpg (25728 bytes)
Lake Eppalock, McIvor Highway.  "The Stanger", a 100 tonne erratic - boulder transported by Permian Glacials. Stranger_1st_yr_2000.jpg (29175 bytes)


Areas north and east of Heathcote

Lady's Pass, folded chert Ladys_Pass_chert.jpg (38828 bytes)
Mt Ida, north of Heathcote.  Quartz rich sandstone containing broken fragments of small, round fossils - the stems of Crinoids.  The broken fossils and the uniform gran size in the sandstones indicate the rock formed in a marginal marine (beach) environment.  The high percentage of quartz is the reason why Mt Ida is a ridge resitant ro erosion.  011006_Mt_Ida_Crinoids.JPG (28190 bytes)
View north from the Mt Ida fire tower.  The fire tower is on a ridge of resistant sandstone.  The walk form the car park to the fire tower is towards the west.  However, the road to the car park climbs the north-south aligned ridge shown in the photo.  The ridges changes orientaiton at the car park, which lies in the linge of a large syncline. Mt_Ida1.jpg (26085 bytes)
Heathcote-Costerfield Rd.  W-shaped fold cosnsiting of a syncline with a parasitic anticline in the hinge.  This syncline is part of the same fold that passes through the car park near the summit of Mt Ida. Cornella2.jpg (37839 bytes)
Heathcote-Costerfield Rd.  Boudins in the hinge of the above syncline.  These feature form when the beds are stretched around the fold.   The orientation of the boudins can be measured and depict the orientation of the fold. 011006_Cornella_Boudins.JPG (25265 bytes)    011006_Cornella_Boudins_interp.jpg (25581 bytes)
Heathcote-Costerfield Rd.  Third year structural geology students from the last ever third year class in Geology at La Trobe University Bendigo. The students are measuring the orientation of beds to plot on special graphs used by Geologists that describe the orientation of folds. 020315_Hq02_Cornella_Mbr.JPG (31447 bytes)
Heathcote-Costerfield Rd.  Traces of worms burrowing into the bedding surface. Hq09_020305.JPG (21477 bytes)
Heathcote-Costerfield Rd.  A differing example of burrows. 011006_Cornella_Burrows_2.jpg (27640 bytes)
Heathcote-Costerfield Rd.  Load casts created during the deposition of the rocks and formed by the dewatering of sediments under the weight of additional deposits dumped over the top. 011006_Cornella_Load_Casts.JPG (19857 bytes)
Heathcote-Costerfield Rd.  Two ball and pillow dewatering structures.  The left on is showing a side view and the one of the right is cut through the middle.  011006_Cornella_Ball_Pillow_1.jpg (38914 bytes)
Heathcote-Costerfield Rd.  Large dewatering structures (tilted on it's side due to folding) - sand is injected through a small neck (in red) into the overlying sediments. 011006_Cornella_Dewater_1_interp.jpg (39491 bytes)
Heathcote-Costerfield Rd.  Early development of mud cracks. 011006_Cornella_Mud_cracks2.JPG (24678 bytes)


Heathcote township

Eroded Heathcote fault zone seprating Cambrian greenstones on the left (east) from Ordovician sandstones and shales on the right (west).  Heathcote_Fault.jpg (36809 bytes)
Hird's open cut, Heathcote Fault zone.  The open cut was operated in the 1990's and is the history of mining in the region. Heathcote_open_cut.jpg (24503 bytes)
Pink Cliffs, Heathcote.  Weathered granodiorite plus one rounded, residual corestone of the original rock.  These rocks were exposed after alluvial mining stripped back the overlying gravels in the search for gold. Heathcote_weathering.jpg (35292 bytes)
Pink Cliffs, Heathcote.  Unconformity between gold bearing gravels (above) and Ordovician turbidites below. HQ10.JPG (20203 bytes)


Tooborac - Puckapunyal Road

Tooborac - Puckapunyal Road.  Spectacular folding and faulting. 011006_Wapentake_1.jpg (36592 bytes)
Tooborac - Puckapunyal Road.  Third year structural geology students, 2000, repeated in front of the cutting. Puckab.jpg (17678 bytes)
Tooborac - Puckapunyal Road.  Third year structural geology students, 2001, repeated in front of the cutting. Wapentake_2001.jpg (32864 bytes)


Linex home
Rocks around Bendigo

Page created 21/06/02
Last updated 21/06/03
Created by
Rodney Boucher
Linex Pty Ltd
2 McGowan St
Bendigo Vic. 3550