2022 >>  2021 >>  2018 >>  2016 >>

Update2022

Feb. 18th, 2022	New function	3D geological map can be displayed without plug-ins.

2022 >>  2021 >>  2018 >>  2016 >>

Update2021

Aug. 24th, 2021	Release	3D geological map (with SPT N-values) of northern Chiba area released.
Aug. 17th, 2021	Release	Contour maps of geological boundaries in northern Chiba area released.
May 21st, 2021	Release	Contour maps of geological boundaries in central Tokyo released.
May 21st, 2021	Release	3D geological map of central Tokyo released.
May 21st, 2021	Release	2D geological map of central Tokyo released.
May 21st, 2021	Release	Standard borehole data of central Tokyo released.

2022 >>  2021 >>  2018 >>  2016 >>

Update2018

Mar. 30th, 2018	New function	Generating function of geological cross-section image available.
Mar. 30th, 2018	Release	3D urban geological map of northern Chiba area released.
Mar. 30th, 2018	Release	Standard borehole data (2 sites) of northern Chiba area additionally released.

2022 >>  2021 >>  2018 >>  2016 >>

Update2016

Sep. 1st, 2016	Release	Outcrop data (196 sites) of northern Chiba area released.
Sep. 1st, 2016	Release	Standard borehole data (9 sites) of northern Chiba area additionally released.
Apr. 8th, 2016	Release	2D geological map of northern Chiba area released.
Apr. 8th, 2016	Release	Standard borehole data of northern Chiba area released.
Apr. 8th, 2016	Site open	'Urban Geological Map' Web site opened.