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IDProjectCategoryView StatusDate SubmittedLast Update
0002900Dwarf FortressGeologypublic2010-07-30 14:482018-02-22 14:45
Assigned ToLoci 
PrioritynormalSeverityminorReproducibilityhave not tried
PlatformOSOS Version
Product Version0.31.12 
Target VersionFixed in Version 
Summary0002900: Magma sea and hell sometimes eat the last layer shown on embark
DescriptionI don't know how prevalent it is or whether its worldgen settings as the layer I wanted (marble in this case) isn't usually on the bottom, and so, I don't have a need to find some flux stone that I expected to be there, but wasn't.

The case for this bug (not sure if it actually IS a bug, or just a quirk) is that I was looking at a cool embark spot I wanted, but when I went to look for the marble (used reveal), it was nowhere to be found. The granite that was above it is present, but the magma sea had apparently eaten the marble layer.

Its a near trivial since you can just go look elsewhere or order flux when needed.
Steps To ReproduceIt's going to be random because of the varied magma sea depth and worldgen parameters, so alot of trial and error and observation is required.

Make note of the layers in your embark zone (might be easier in deserts as multiple soil layers crowd out the rock layers in the list)


use DFreveal or any method you want

check to see if any rock layers are missing.
Tagsembark, geology, rock, worldgen
Attached Files

- Relationships
related to 0010268new Pre embark site information doesn't take elevation into effect when predicting an aquifer 
has duplicate 0010588resolvedLoci No ore Anywhere on embark site on no level whatsover 

-  Notes
Granite26 (reporter)
2011-02-26 07:05

I'm seeing this on a .19 embark where it's eating most of my deep metals.

May want to touch this with the new metal scarcity. Or not.
PatrikLundell (reporter)
2018-01-29 04:07

The reason for the pre embark misinformation is that DF apparently looks only at the geo biome when providing information, and fails to take the depth of the SMR into consideration, so the bottom part of the geo biome can be absent, while DF still reports resources that would have been present in those layers.

I consider this issue to be closely related to 0010268, where the same failure to take elevation caused soil erosion into consideration incorrectly predicts the presence of aquifers and clay.

The above is based on 0.43.05, which is when I investigated the behavior, with no reason to expect it to have changed for 0.44.05.
Detros (manager)
2018-01-29 11:48

Good find, relationship added.
Loci (manager)
2018-02-22 14:44

v0.44.05: Blurry Bunny posted a save in 0010588: [^]

- Issue History
Date Modified Username Field Change
2010-07-30 14:48 smjjames New Issue
2010-07-30 14:51 smjjames Tag Attached: embark
2010-07-30 14:51 smjjames Tag Attached: geology
2010-07-30 14:51 smjjames Tag Attached: rock
2010-07-30 14:51 smjjames Tag Attached: worldgen
2011-02-26 07:05 Granite26 Note Added: 0015522
2018-01-29 04:07 PatrikLundell Note Added: 0037716
2018-01-29 11:47 Detros Relationship added related to 0010268
2018-01-29 11:48 Detros Note Added: 0037718
2018-02-22 14:42 Loci Relationship added has duplicate 0010588
2018-02-22 14:44 Loci Note Added: 0037820
2018-02-22 14:45 Loci Assigned To => Loci
2018-02-22 14:45 Loci Status new => acknowledged

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