"Is that a oxymoron?"
Not in my book.
You stated it perfectly.
http://www.freerepublic.com/focus/keyword?k=liquidexplosives
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A few more details...
http://www.aljazeera.com/me.asp?service_ID=13228
"Liquid explosives found South Lebanon"
3/3/2007 2:00:00 PM GMT
"Lebanese authorities reported having uncovered 31 chemical explosive charges in south Lebanon"
ARTICLE SNIPPET: "After nearly six months of extensive search by U.S. and European intelligence agencies for lethal "liquid explosives", that followed a foiled plot to attack passenger aircraft on flights across the Atlantic, the Lebanese authorities reported having uncovered 31 chemical explosive charges in south Lebanon.
Each of the 31 confiscated explosive devices is made of two tubes filled with blue liquid, fitted on a board and connected to a timer-detonator, said one source demanding anonymity.
The confiscated sets included "sophisticated electro-chemical timers-detonators that can be timed to explode after as late as 124 days," a police communiqué said, according to Naharnet."