Techtonics of Psychon and Wierd Geology

My previous posts here on dungeon tectonics apply in part. This is a specific guide to Psychon but other weird worlds could benefit. As Psychon is a mess of incompatible hexes, and is terraformed often, many changes are cosmetic and skin deep. Previous layers could be only a few years old. Or a layer of dragon fossils might be created freshly for a hex divine makeover. Rolling for colours of each layer beneath the soil. Often layers are just different coloured but some layers quite odd. 2d6+3 layers generally with 1d4-1 rolls on below table.

d12 Base Colours on Psychon 
1 Crimson (red, brick, maroon)
2 Magenta (rose, pink)
3 Cyan (sky, light blue)
4 Turquoise (sea, turquoise, aquamarine)
5 Yellow (gold)
6 Tangerine (orange, bronze)
7 Emerald (olive, forest)
8 Green (lime, light green)
9 Violet (Indigo, purple, lavender)
10 Lapis (dark blue, midnight, navy)
11 Ivory (bone, pearl, shell, silver) or roll 1d10 twice
12 Jet or roll 1d10 1d4+1 times

d100 Psychonian Wierd Geology 
Roll d4-1 per hex.
1 Swiss cheese of giant caverns with seperate eco systems and civilizations, possibly who hid from terraforming in past

2 Huge cave complex with remains of burried civilization trapped here aeons ago

3 Riddled with caves, often connected across land with some larger caves

4 Underwater rivers network the hex, wells are easy to make and some are navigable

5 A subterranean ocean with islands and long hidden life forms

6 A huge multi chambered cavern with artificial sun and many eco zones and peoples

7 Huge layer of of ancient ruins over whole hex underground, often mined

8 Ancient battlefeild of ash, ruins, skeletons and buried forbidden weapons

9 A layer with many buried corpses infected by necrovirus intact and ready to raise if disturbed
10 A huge layer of buried city with intact buildings and possibly long trapped inhabitants
11 Many bunkers buried in layer

12 Trans continental vacuum train tubes, now ruined may run beneath hundreds of hexes

13 Industrial wasteland full of poison and buried synthetic life like robots and androids

14 Layer of ancient junkmail with occasional buried ruins smothered underneath

15 A great dome built as great refuge but anything could have happened

16 A layer of amazing fossils like giants, dragons, robots or other

17 A layer of ice which would cause chaos if melted

18 A layer of boiling mud and clay that land floats on, occasional boiling mud on surface

19 A layer of toxic chemicalsand industrial waste and garbage
20 A layer contaminated by psychotronic nanoids and nerve agents
21 A layer contaminated by active necrovirus spores 

22 A layer of ancient dead vegetation

23 A layer of ancient dead vegetation that gives off horror spores if opened

24 A layer of Morlock tunnels and complexes with eloi herds

25 A layer of beastmen tunnels for molefolk or ratmen or reptilian folk

26 A layer with Eldren mantaining equipment beneath surface

27 Massive shelters and drain system over hex

28 Magma layer causing occasional volcanoes and lava flows on surface

29 Unstable causes earth quakes
30 Boiling water, rises in steam geysers and springs
31 Flamable Gas

32 Sulpherous lakes, leak in hot springs on surface

33 Contaminated by disease which occasionally gets loose

34 Oil deposits, oil, bitumen and gas found on surface

35 Precious metals seams

36 Metal seams of several types

37 Acidic ground water forms acid wells on surface

38 Coal layer with some gas, some burning for decades

39 Ground water may rise occasionally
40 Huge salt deposits rises occasionally or salt mines found
41 Whole layer paved in cement, bitumen, brick or metal with foundations

42 Remains where surface flew away long ago, rubble from here still floats

43 Magical layer occasionally floats off carrying terrain with it

44 Crystaline layer

45 Gems and jewelery mine  seams (the gods are sick)

46 Huge complex of ancient AI or god, sleeping or active

47 Huge maintenance complex where humanoids maintain all surface

48 Gargantua layer, frequently a beast arises or buries self here

49 Whole layer a force feild
50 Ancient meteor crash area, covered in objects
51 Layer of edible manna, critters might get into and undermine hex 

52 Buried spacecraft, aliens crap or spacetrash

53 Living flesh with epidermis, fat layer then meat

54 Crystalline caverns

55 Crystalline sheet layer

56 Crystalline living beings

57 Solid star molecular circuitry belonging to a god

58 Organic living soup seeks to absorb life if freed into mindless mass

59 Organic living soup seeks to absorb life into collective perverse inteligence
60 Radioactives and irradiated crap
61 A mass of gigantic slumbering shoggoths 

62 Beings frozen in stasis then buried by god for safekeeping

63 Plastic either mass or plastic waste heaps of ancients

64 Tyres, ruined cars and bitumen with remains of drivers inside

65 Layer of Impenetrable Duralinium

66 Network of huge giant veins pumping blood like fluid

67 Mass graves of enormous massacre of ancient humans

68 Mass graves of ancient beasts, possibly extinct megafauna or dinos

69 Mass graves of androids and robots shattered and laying charred
70 Strange wind layer, possibly inhabited by elementals, holds higher layers aloft
71 Mass of squirming huge worms, some are gigantic

72 Glass layer

73 Huge flaming underworld with elementals, devils and devilborgs

74 Frozen underworld caverns of ice with frosty devils, giants and other hoorors

75 Great underworld prison of the dead guarded by devil and borgs

76 Datastacks of the underworld gods where souls and lives of the dead are stored for re-use in a huge supercomputer complex served by devils and androids
77 Primordial ocean of darkness full of spawn of Tiamat

78 Primordial ocean of darkness where where the god Enki data stacks are kept
79 Raw mass of primal chaos swarming with chaos daemons, mutates on contact
80 Layer of bricks with concrete foundations
81 Layer of bricks actually modular robots
82 Layer of bricks actually demons of law that can form composite beings or structures
83 Huge mausoleum sprawling for miles, often crawling with dead or monsters
84 Massive buried subworld ruled from depth by a death machine with a flaming sword
85 A domed garden utopia where playful eldren serve a god who keeps them hidden
86 A domed garden utopia where eldren serve as cattle eloi for morlock master
87 Sandstone
89 Marble
90 Basalt
91 Granite
92 Asbestos (salamander scales)
93 Quartz
94 Psychonian gemstone
95 Psychonian metal
96 Ash, often compressed like volcanic pumice stone
97 Ancient buried nanoswarm
98 Sedimentary rock
99 Limestone
100 roll 1d2+1 more times possibly combine

Using in adventures
A princess calls your dreams from a citadel between a layer of glass and crystal deep beneath your land.

Deep beneath Psychon, past the sleepers frozen like jewels in stasis, past the great sickness carrying glowing rubble, is a band packed thick with undead corpses from the apocalypse. Only necromancers would dig that deep!

Beneath the magenta rubble which floats, there is a chasm world with a artificial sun and strange creatures and beneath that is a eldren paradise that the drunken battered eldren dreams of returning too.

Under the great saltmines there is a buried wasteland of ancient factories and landfill where robots and android bodies are broken and scattered. Below that is a layer of ancient duralinium nothing may pass hiding some secret of the gods forever.

Layers have uses including interesting levels for dungeons or perhaps a miners pit uncovers multiple horrors to face. Prospecting on psychon can be deadly and people in some hexes forbid deep digging beneath scratching soil for crops. A canyon might cut through many layers. A river or well may become polluted by actions of a different layer.